Best Fish for 10 Gallon Tank (27 Awesome Species)

Wondering what the best fish for 10-gallon tanks are? This guide is for you!

The type and number of nano fish you can keep in a 10-gallon tank depends on a number of factors. For example, how fast—growing is the fish?

What is its length when fully grown? This tank is meant for nano fish – those breeds of tiny fish that don’t extend beyond three inches.

Obviously, any fish above this is out of the question and should not be considered.

To stock your 10-gallon tank, you need to choose the suitable species of nano fish for it. Also, you should understand the number of fish you can keep in this space, and how best to take care of them. Finally, acquaint yourself with the behavior of fish you intend to keep as tank mates to determine their compatibility.

Unlike the tiny tanks, you can keep larger and more active fish in a 10-gallon tank without the need to adjust space in your study or living room.

10 gallon tank fish

Stocking a 10-Gallon Fish Tank

Although the 10-gallon tank is smaller than some huge aquariums, it demands more. The water conditions in big aquariums tend to be stable.

However, you must constantly keep your eye peeled for changes in water conditions in the 10-gallon tank.

Aquariums for nano fish have special needs that require your constant attention. All the same, this should be a welcome challenge if you plan to have a good experience with your fish pets.

The main challenges you’ll encounter stocking a 10-gallon tank include the choice of fish. Unfortunately, not all nanos are suitable for this tank.

Some nanos will need a smaller capacity tank, while others require a bigger one.

As such, you must thoroughly acquaint yourself with the behavior and personality of the fish you intend to stock to determine its suitability.

Also, remember that a 10-gallon tank requires as much care as the smaller tanks. It needs good filtration, heating, and lighting systems to cater to the needs of the fish you intend to stock.

A 10-gallon tank will need more regular maintenance than the larger tanks. This is because water conditions change faster in small fish tanks than in larger ones.

But again, how regularly you need to change the water and clean the tank depends on the species of fish you intend to house in this tank.

Once you have identified the right nano fish for this tank, you need to contact a reliable seller. Depending on the species you have in mind, this could be someone local or a fish seller based overseas.

In either case, quality comes first. You’d want to deal with a seller with a proven track record. If you are a beginner, pay close attention to customer reviews from verified purchases.

It may also help to consult a more experienced keeper on the do’s and don’ts in the nano fish-keeping sector.

10-Gallon tank and the Inch-Per-Gallon Principle

If you’re an old keeper, you’ve probably heard it said that you should keep 1 inch of fish for every gallon of water available.

While this is a good principle and holds true in many cases, it is not always applicable. Moreover, this old rule has many exceptions depending on the circumstances.

For example, keeping ten 1-inch-long nanos in a 10-gallon tank makes sense. Here, the principle of inch-per-gallon holds true.

But does it make much sense to keep one 10-inch fish in a 10-gallon tank? Obviously, the fish will be too large for this space.

You can keep more small fish in a 10-gallon tank than one large species.

Also, you should appreciate that the needs of different fish vary. For example, some species are best kept alone because of their aggressive nature.

As much as possible, avoid keeping too many fish in the 10-gallon fish aquarium. Your fish will not be happy or healthy when cramped and confined.

They need enough space to move around and behave naturally.

Also, keeping too many fish in a 10-gallon tank will compromise water quality. So you see, the more fish you put in the same space, the more waste they produce.

Fish waste is one of the biggest generators of ammonia and nitrites – toxins that severely compromise the health of your fish.

If you love and respect your pets, you don’t want this to happen.

How Much Water Does a 10-Gallon Tank Hold?

Contrary to popular belief, a 10-gallon tank DOES NOT hold 10 gallons of water. If you consider this statement, it makes much sense.

You cannot fill your 10-gallon tank to the brim, which means it will always spill and leave the surroundings messy.

You need to leave enough room to make things easy during feeding and maintenance.

Also, consider that this 10-gallon tank does not comprise water only. At the bottom, you have about 3 inches of substrate.

Also, factor in the ornaments and decorations, hardscape such as driftwood, gravel, and rock, and you get the idea.

Plastic and hardware such as thermometers, filters, and heaters take up more space.

If you follow the 1-inch per gallon rule, the 10-gallon tank will clearly not hold 10 inches of fish.

It will probably house 7 or 8 inches of them.

These are some considerations you must take into account to create the best conditions for your fish in this tank.

Thinking everything through from the beginning makes life easier and worth living for your little friends.

Characteristics of Nano Fish for a 10-Gallon Tank

Nano fish are very small fish that most people prefer to keep in their homes and offices. So, what characteristics of nano should you look for in stocking a 10-gallon home or office tank?

Size Matters

One of the biggest mistakes you can make is to choose a fish species that will outgrow the 10-gallon tank.

This tank size is meant for nano fish – most of which reach about 2 inches long as adults. This is your cue to carry out adequate research on the type of fish you intend to stock in the tank.

How big does it grow as an adult? Will it still fit in the tank without inconveniencing the other fish?

Behavior and Personality

How does the fish behave when put with others? Is it aggressive, or will it live along fine with other species?

Some fish species are highly territorial and will aggressively take up all the space in the tank. They’ll make life for the other fish a living hell, and you may be forced to relocate them to other spaces.

The aggressive types should be housed in smaller, 1-fish tanks. The 10-gallon tanks should be reserved for community species such as the Freshwater Pea Puffer.

Hardiness and Adaptability

Compared to the wild, the 10-gallon tank provides less–than–ideal conditions. Water conditions in small tanks become unstable and fluctuate at short notice.

It would be best if you had a fish species that could withstand these changes. The hardier the species, the more likely it is to thrive in the conditions you find in a 10—gallon tank.

Activity Level

A 10-gallon tank has limited space for swimming. As such, it is not very suitable for fish species considered hyper.

Putting a number of highly active species together in this tank is a disaster waiting to happen. So to make your pets’ lives happy, give them enough swimming and playing space.

What Are the Best Fish for a 10-Gallon Fish Tank

#1 – Betta fish

New and seasoned hobbyists keep this fish for its beauty and color. It is an easy-to-care-for species that grows up to 3 inches as an adult.

With time, this native of Thailand and Cambodia has become the all-time favorite for freshwater tanks.

To keep your betta happy and healthy, feed it with live or frozen insect larvae and insects. It also does well with betta flakes and betta pellets.

This mid-water to top-level swimmer can be pretty aggressive. It would help if you studied his personality closely to determine who he can share the 10-gallon tank with.

You’d want to avoid putting this fish with other colorful species as they may not get along.

Also, never put two male bettas in the same tank, as they will likely fight to the death. For good reasons, bettas are also known as the Siamese fighting fish. This is because they have an incorrigible war-like nature.

Although male bettas cannot live together in the same tank, you won’t have a challenge keeping a single male with females.

You can also house a number of females together in a sorority.

#2 – Female Betta Fish

Like their male counterparts, female bettas originated in South East Asia. This nano grows to about 2.5 inches long.

Female bettas are less aggressive than males, though they won’t live with just any tank mate that comes along.

Although male bettas are fancier due to their color and magnificent finnage, female bettas are more suitable for community tanks.

If you want to put more than one species in the 10-gallon tank, you may find the female betta a better choice as a tank mate.

Females are more likely to accept tank mates and live with them fine.

This nano fish is sensitive to water temperature fluctuations. As such, you need to closely monitor the tank conditions to avoid putting her at a disadvantage.

You can keep a small group of females together in the tank, or opt for a single one.

#3 – Brown Pencilfish

This fish is also called the diptail pencilfish and hockeystick pencilfish because of its shape. Its scientific name is Nannostomus eques.

Beginner keepers seek this fish for their 10-gallon tank because it is affordable and readily available.

It is also easy to care for, which every keeper hopes to get in a nano.

Brown Pencifish dwells and swims on the surface. This makes it a valuable addition to the tank, since it is pretty challenging to find surface swimmers for this tank size.

However, the Brown Pencilfish is a jumper and may hop right out of the tank if you don’t keep a lid on it.

Because of its small mouth, you have to break the food you give this pet into small pieces. It thrives on small fish food, fry, daphnia, brine shrimp, and other such food items.

A 10-gallon tank can comfortably house a school of 5 to 7 Brown Pencilfish.

#4 – Swordtail Fish

Swordtail fish are a welcome addition to your home or office tank because of their beauty. They have well-designed tails that extend to their backs, making their movements fluid and mesmerizing.

The good thing about this fish is that it is quite hardy. It accepts a wide range of temperatures and pH conditions in the tank.

This is one of the best choices for a beginner still learning the ropes of nano fish keeping. The Swordtail fish is docile and will live peacefully with any species of the same temperament in the tank.

#5 – Japanese Rice Fish

This hardy and docile species is very suitable for the freshwater 10-gallon tank in your home or office. The Japanese Rice fish (or Rice fish) grows to about 1.5 inches long as a full adult.

As the name suggests, this species is a native of Japan. It feeds on live and frozen plants, insect larvae, and insects.

The Japanese Rice fish is quite sensitive to temperature changes, and needs to be kept at temperatures between 220C and 270C (720F and 80oF).

This fish swims in all water levels – top, mid, and bottom – creating a beautiful display of playful movement.

You need to keep a lid over the tank to prevent this pet from jumping out of the water.

For centuries, the Japanese Rice fish was raised in the rice paddies of Asia, where it went by the names Japanese Killifish and Medake.

This species has such a friendly personality that it will live with just about any tank mate. So keep a school of 6 or more pets with large invertebrates to enliven your 10-gallon tank.

#6 – Dwarf Cichlids

Also known as Apistos, the Dwarf Cichlids add a glorious display of colors to your tank. You should consider keeping a pair of this species if you are a beginner breeder.

It is one of the easiest nanos to breed – they just need lots of food, and you can leave them to spawn without much ado.

Of course, you also have to provide them with a bit of shelter, such as little caves and huts in the tank where they can lay and hide their eggs.

The Dwarf Cichlids are easy on the pocket as they are readily available in local and online stores. Also, this species is quite tolerant to changing water conditions.

#7 – Harlequin Rasbora

Although the Harlequin Rasbora may not be as colorful as some other nanos, it is very easy to look after.

It is a good choice for beginners who want hands-on experience caring for small-tank fish.

As long as you feed this species regularly, they are good to go. They are not easily affected by temperature and pH fluctuations – unless this gets really serious.

Also, it is vital that you clean and maintain the tank regularly.

Their beauty in the tank is best seen when you put these fish in groups. Shoals of Harlequin Rasbora have fluid movements, and their community behavior is fascinating.

Although not much can be said about this species’ coloration, you’ll love them for their high activity level.

#8 – Guppy Fish

An adult Guppy grows to 2.5 inches long, making him ideal for a home or office tank. This native of South America and the Caribbean has a peaceful temperament and is easy to care for.

Guppies are omnivores and enjoy mostly live or frozen foods. However, in the absence of these, they make do with feed-dried diets.

The Guppy has remained popular as an aquarium fish because of its fantastic color displays, mostly evident with fancy guppies.

This species of nano fish is hardy as well as versatile. They can thrive in whichever environment they find themselves in.

Being livebearers, you should be careful not to put males and females together if you don’t plan to breed.

Actually, you’re likely to find that the female is already pregnant when you purchase them. This has made males more popular than females.

You can house this species in your 10-gallon tank alone or with others in a community. Either way, guppies do not disappoint.

#9 – Chili Rasbora

This 0.8 inches nano fish is one of the easiest species to care for. It is a peaceful breed whose origins are in South East Asia.

The Chilli Rasbora is a carnivore that enjoys live, frozen, and feed-dried foods.

This specimen is a top and mid-water swimmer that fits quite well in a 10-gallon tank. You can keep this species on its own, or with other fish in a community setup.

This fish is an excellent addition to your tank for its beautiful, bright-orange color and black markings. In addition, it will enthrall you and your guests with its acrobatic moves around the tank.

If you opt to keep Chilli Rasbora on their own, you can keep as many as 20 in a 10-gallon tank. Ensure the tank is well planted and decorated because this fish enjoys an exciting life.

#10 – Lyretail Killifish

This fish is ideal for the beginner breeder. Also known as golden panchax or austrate killifish, this species is sold in pairs for breeding purposes.

However, you can opt to keep one male with several females, which will give you an added advantage.

The male will attend to several females in one breeding season. This is recommended only if you’re ready to handle the number of fries spawned by the many females.

With one male and one female, you can practice colony breeding. This involves bringing up the parents with their young ones in the same tank.

If you decide to take this route, ensure the tank has abundant plants, such as water spirite on the surface and thick moss on the ground.

Lyretail Killifish are quite playful and jumpy in nature. They will likely jump out of the tank if it doesn’t have a good cover.

This species has a significant downside. Its aggressive behavior makes it hard to keep the Lyretail Killifish in the same tank as other fish.

#11 – Endler’s Livebearer

This native of Venezuela grows to 1.8 inches as a full adult. It is a peaceful, easy-to-care-for omnivorous nano fish that swims on all tank levels.

The Endler’s Livebearer thrives on live, frozen, and feed-dried foods. It is a fish cousin of the guppies as they share several characteristics.

For example, like the guppies, the Endler’s Livebearer breeds fairly quickly.

This means that unless you want to get into full-time breeding, you should not keep male and female Endler’s Livebearers in the same tank.

To prevent breeding, keep single-sex members of this group in the same tank. You can add more color by introducing a community of other species into this tank.

Endler’s Livebearers are great foragers. You’ll have lots of fun watching these specimens move about the tank, foraging, and swimming around.

If you are a beginner keeper, this is one nano you can consider starting with.

#12 – Seluang Fish

This is another sub-group of the Rasbora family. The Seluang fish is an excellent addition to any tank that demands peaceful co-existence amongst its members.

Take care not to put this species in the same space with a fighter because Seluangs don’t do so well when their peace is threatened.

This is an easy-to-care-for nano that needs food, cleanliness, and nothing else. To make your 10-gallon tank even livelier, put this species in groups as they do better that way.

Ensure there’re enough plants and vegetation for this lively fish – this is what makes his world.

#13 – Kuhli Loach

There’s everything to love about this eel-like, oddball fish. Kuhli Loaches come in various colors, and you can’t miss one that takes your fancy to light up your tank.

You’ll also enjoy watching this specimen move about the tank as they scavenge for leftover foods since they are experts at this.

Being a peaceful species, Kuhli Loach can live with other peaceful community members. They mainly do well put together with rasboras and tetras.

Surprisingly, this is one of the fish that bettas readily accept as a tank mate.

Keep your Kuhli Loaches happy and healthy by feeding them underwater noodles and community pellets.

#14 – Asian Stone Catfish

There’s a wide variety of nano catfish to choose from to add life to your 10-gallon tank. These include the Asian Stone Catfish variety.

This specimen is full of color and has a vibrant personality. In addition, it has a peaceful and timid temperament, making it ideal for beginners.

Depending on the subspecies, Asian Stone Catfish vary between 1.25 and 1.6 inches as fully grown adults.

Their peaceful temperament makes them a welcome addition to community tanks. The Asian Stone Catfish are easy to care for, thriving on most foods eaten by the other fish.

This specimen enjoys swimming and feeding at the bottom of the tank. In as much as you can, use sinking foods and community pellets.

Being a native of northeastern Indian and Bangladesh, the Asian Stone Catfish does well in warm waters.

#15 – Cherry Barb

This peaceful, docile species does very well in community tanks. In addition, the Cherry Barb thrives when put together with fish of a similar temperament.

A school of 8 or so of these nano fish will add life to the tank when their red and bright orange colors pop against the green plants in the aquarium.

If you are looking for an excellent nano-breeding fish, start with this one. The Cherry Barb is good at laying its eggs at the base of the plants and in the crevices of the tank’s hardscape.

#16 – White Cloud Minnow

This native of China measures 1.5 inches as a fully grown adult. The White Cloud Minnow has an easy temperament. It will live with other members of the tank community without a fuss.

This specimen is relatively easy to care for: you need to feed them regularly and take care of the tank’s cleanliness.

The White Cloud Minnow enjoys live or frozen insects and insect larvae. They can also do well with carefully selected commercial foods to boost their immunity and strengthen their health.

This specimen is a mid-water swimmer, and will gracefully complement the top and bottom swimmers you may want to host in the tank.

For best results, introduce this specimen into your tank in groups. This way, you’ll witness their full display of swimming prowess and beauty.

Consider introducing different varieties of this species. All have bold gold colors and flowing fins.

#17 – African Cichlids

Also known by their scientific name Neolamprologus multifasciatus, the African cichlids grow to a maximum of 2 inches as adults.

These species prefer hard water and higher pH than most nanos.

If you enjoy watching them build their beautiful snail shell homes at the bottom of the tank, you’ll go the extra mile to accommodate them.

This specimen will keep you entertained as they dig pits and move sand, stones, and shells with their mouths.

Also, they are good breeders. The African Cichlids will soon give you babies to raise or share with other hobbyists by giving them sufficient food and good living conditions.

#18 – Dwarf Corydoras Catfish

This native of South America grows to about 1 inch long as an adult. They have a peaceful demeanor that enables them to live well with other community members.

The Dwarf Corydoras Catfish is omnivorous and enjoys a diet of live, frozen, and feed-dried foods.

Being a mid-water level swimmer, this specimen will complement the fluid movements of the tank’s top and lower-level swimmers.

You’ll feel the impact of Dwarf Corydoras Catfish when you introduce them into the tank in groups.

Because they stay really small (1 inch), their impact in a 10-gallon tank is palpable when you put in about 6 of them.

#19 – Green Neon Rasbora

This tiny schooling fish emits a radioactive, iridescent green color that adds an aura of mystery and beauty to the tank.

The shimmering green color in a tank is unusual, and is rarely seen in a home or office tank. However, if you put a school of about 6 or 10 in the tank, you can be sure it will be the center of attention.

The Green Neon Rasbora’s sparkle blends very well with the reds and oranges of other nano fish. It brings the kind of brilliance you need to animate not only the tank but an entire room.

The downside to this nano fish is that it is not readily available. However, if you are persistent enough, you’ll get them from reputable online pet stores either locally or overseas.

Ensure you deal with a seller willing to ship them to your region.

#20 – Neon Tetra

Scientifically named Paraceirodon innesi, this nano fish grows to about 1 inch as an adult. It is an easy to care for, docile omnivorous with origins in South America.

The Neon Tetra is a mid-water level swimmer that thrives in well-maintained tanks. However, to keep this fish, you need to take measures to avoid temperature and pH fluctuations.

This fish does well in groups of 6 or 8. Many online and live pet stores stock this specimen, so you won’t have trouble fulfilling your order.

#21 – Cardinal Tetra

Cardinals are closely related to the Neon Tetras captured above. However, the Cardinals are slightly larger (about 1.5 inches) and more sensitive to water changes than the Neon Tetras.

Cardinals do well in a pH level of between 4.0 and 6.0. Anything above 7.0 messes up their internal system and severely compromises their immune system.

Cardinal Tetras are good feeders and prefer live, frozen, and feed-dried foods. They are particularly fond of bloodworms and brine shrimp, their staple in the wild.

This native of South America is docile enough to live with other community members. Cardinal Tetras do well when introduced into the tank in groups of 5s or 7s.

#22 – Platies

Platies are livebearers that have risen in popularity in recent years. Although they are not as long as Swordtails, they are stouter than guppies.

Platies add beauty and variety to your 10-gallon tank with their radiant colors. But, regardless of the color you’d like to see in your tank, you’ll find a Platy that has it.

This specimen is easy to look after because it is not a picky eater. On the contrary, platies are omnivores that relish any meal you give them.

Alongside tiny invertebrates, soft plants, and delicate plants, Platies eat commercial foods. oreBut, unfortunately, young meals are often cannibalized by the older members of their families.

As such, you need to separate gravid females from the rest of the family before her young ones are preyed upon. Gravid female Platies give birth to between 10 and 100 live young.

Feed the young Platies with their mother away from the crowd until they are old enough to fend for themselves.

Being peaceful nano fish, platies can live well in communities with other species.

#23 – Celestial Pearl Danio

This 0.75-inch-long nano fish has its roots in Thailand and Cambodia. It is a peaceful fish that presents no trouble being housed with members of other species.

The Celestial Pearl Danio is an omnivore that enjoys live, frozen, or feed-dried foods. You’ll enjoy feeding this specimen because it is not a picky eater.

To keep this fish happy, keep him in a well-planted tank with lots of decorations and toys.

You’ll enjoy seeing the Celestial Pearl Danio swimming around the aquarium and interacting with all the objects therein.

This fish is poor at defending itself and should not be housed with aggressive types. For the best experience, have a school of about 10 individuals in the tank.

#24 – Dwarf Otocinclus

This native of the Amazon and Orinoco Rivers in South America grows to a length of between 1 and 1.5 inches long.

This specimen has a peaceful temperament, making him ideal as a tank mate for a wide variety of other nano fish.

Are you looking for a fish to help you clean the tank? The Dwarf Otocinclus in your fish. This fish eats algae and is constantly foraging for food leftovers in hard-to-reach crannies and crevices.

Without algae, keep this fish well supplied with vegetables and vegetable products.

In the wild, these species thrive in schools. So this is your cue never to keep a solitary Dwarf Otocinclus in your tank.

Introduce them to your 10-gallon tank in groups of 6s or 8s.

#25 – Zebra Danio

Being a native of India, the Zebra Danio should be kept in water temperatures between 210 C and 280 C (700 F and 820 F).

This fish is a mid-water swimmer that complements the other swimmers you’ll introduce into the tank.

Get ready to be mesmerized by the high speeds at which this little fish moves around. This tells you that the Zebra Danio needs a lot of space to play.

Being easy to care for nano fish, the Zebra Danio will not put a dent in your pocket.

Also, its peaceful disposition makes it easy to house this specimen with other species in a community tank.

A fully grown Zebra Danio gets to a length of 2 inches. So a school of 5 or 6 of these nano fish adds life and color to your home tank.

#26 – Dwarf Gourami

The Dwarf Gourami grows to about 3 inches long. It has a semi-aggressive disposition, and you need to determine its compatibility level with all potential tank mates.

This fish is originally from India, Pakistan, and Bangladesh. As such, it needs warm waters between 210 C and 280 C (700 F and 820 F).

The Dwarf Gourami does not require a lot of care. However, you must ensure that the tank is clean and the temperature and pH levels are proper.

Also, you should provide lots of live plants and hiding places in the tank to make this fish happy. The Dwarf Gourami likes the dark, shady parts of the aquarium.

At the same time, you need to keep an eye out to ensure that this fish does not fight with his tank mates.

#27 – Freshwater Pea Puffer

Being a native of India, this 1-inch specimen thrives in warm waters between 210C and 280C (700F and 820F).

It does not require much care and will make do with the carnivorous diet you provide. It takes its meals live or frozen.

The Freshwater Pea Puffer has a versatile personality that’s best seen when this nano is swimming either at the top or mid-water.

However, this species can be quite aggressive, and you must house them independently.

If you plan to keep this fish with tank mates, ensure the aquarium is heavily planted.

Add as much driftwood and other structures as possible that act as distractors every time this fish gets the urge to get aggressive.

How Best to Set Up a 10-Gallon Tank for Fish

Have you decided on the best nano fish you want to keep in your 10-gallon tank? If you have, you need to move to the next logical step, setting up a good home for your pet.

Here are a few things you need to take care of – whether you plan a community or single—species tank.

Heating Requirements

Most nano fish fit for your home originates from the tropical lands of South East Asia, South America, and the Indian subcontinent.

As such, they require warm water in the tank. Therefore, a fluctuation in temperatures will likely affect them negatively.

As such, you need to invest in a good quality heating system to ensure the water never goes cold.

Filtration System

To keep your nano fish healthy, happy, and well-balanced, you should keep the tank toxin-free.

Your 10-gallon tank needs an effective filter to remove all unwanted material and impurities. Also, you should decide on the type of filter you need for this tank.

Some keepers prefer sponge filters because this filter gives great results at a reasonable initial price. You may also look into the merits and demerits of the canister and internal power filters.

Ensure that the filter you settle for is designed and rated for a 10-gallon tank. A too-small filter will not clean the tank well enough.

A too-powerful filter will stir the waters too much and wreak havoc in your pet’s life.

Proper Lighting System

Use an appropriate lighting system for your 10-gallon tank. It is recommended you use either fluorescent lights or LEDs.

Both types of lights will provide illumination without messing up the tank temperature levels. A sound lighting system caters to the needs of the nano fish as well as the plants in the tank.

How to Improve Living Conditions in a 10-Gallon Tank

Check on the Water Quality

The nano fish you have chosen for your 10-gallon tank will feel safe and secure when their living conditions are well cared for.

One of the things you have to constantly follow up on is the quality of the water. Water in a 10-gallon tank gets dirty pretty fast.

From leftover foods to fish waste, a lot goes into making the water conditions untenable for your little friend.

Keep changing the water to eliminate impurities. Also, it would be necessary to regularly test it for ammonia, nitrites, and other toxic waste products.

For best results, invest in a proven and tested basic kit that will give you reliable results. A good testing kit will help you determine the water pH and hardiness.

It will reveal the presence of any foreign substances that could harm your nano fish.

Proper Tank Maintenance

The 10-gallon tank gallon tank will be the home of your chosen fish for the rest of their lives. So naturally, you’d want your pets to feel safe and secure in this home.

Roll up your sleeves and make it your business to keep this tank clean. Like you’d not like to live in a dirty home, your nano fish pets want to live in a clean environment.

This calls on you to remove the waste on the substrate as you siphon out the water. One of the biggest challenges you’ll encounter is that of algae presence.

If your chosen fish feed on algae, they’ll go a long way in helping you solve this problem. Otherwise, you have to do the algae removal yourself.

You can scrape algae off the tank walls using a scraper and a small brush.

Also, algae have a tendency to build up around filters. Make it a point to rinse your filter regularly to solve this problem.

Grow Plants

Growing plants in a 10-gallon tank can be fun. Plants improve the overall décor and ambiance of the fish tank, and make your pet’s home look posh and comfortable.

Why should you grow plants in your fish tank?

  • Make your pet’s home livelier.
  • Plants generate oxygen in the water.
  • Plants use up carbon monoxide exhaled by the fish.
  • Live plants remove nitrates from the water by using them as fertilizer
  • They provide hiding and breeding places for some fish

Frequently Asked Questions (FAQs)

Where can I buy fish for my 10-gallon aquarium?

You can buy nano fish for your aquarium from trusted online and live fish pet stores.

Consider that some fish are available in your locality while others can be sourced from faraway lands or overseas.

Talk to the dealer about they transport the fish, and decide whether this mode is reliable.

Where can I buy a 10-gallon fish tank?

You can get a 10-gallon fish tank from online and local fish stores. Deal with only trusted vendors with enough customer reviews for the same service.

Also, consider the logistics for transporting the tank to your premises.

What is the biggest fish I can keep in a 10-gallon tank?

A 10-gallon tank is meant for nano fish – which is, at most, 3 inches long as an adult. A male betta is one of the biggest fish you can house in this tank.

How many fish can I keep in a 10-gallon aquarium?

You have to make a number of considerations to decide on the number of fish to keep in this tank.

For example, is the fish a shoal species or not? What is their temperament? What about feeding and care needs?

Most 10-gallon tanks house up to 20 fish. However, at times, it is recommended that you keep just one species.


You no longer have to wonder what you can put in your aquarium. Instead, you’re surrounded by countless possibilities regarding nano fish for your 10-gallon tank.

Whether you like killifish, cichlids, or livebearers, a nano fish meets your need in a pet store near you.

Using the above list of uncommon and popular fish, you can decide the best fish for your home or office.

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