10 Gallon Standard
The classic beginner aquarium. Offers just enough volume and stability for small rasboras, nano tetras, or a centerpiece Betta.
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The classic beginner aquarium. Offers just enough volume and stability for small rasboras, nano tetras, or a centerpiece Betta. With a capacity of 38 litres (10 gallons) and dimensions of 51 x 25 x 30, this standard tank is compatible with 37 species in our database — giving you plenty of options for a thriving community setup.
Stocking Tips
- 💡Choose one centrepiece fish and build your community around it. Avoid multiple territorial species in a tank this size.
- 💡A good filtration system rated for 1.5× your tank volume helps maintain stable water quality.
Stocking Recipes
Pre-built species combinations that work well together in this tank.
Peaceful Community
- Gardner's Killifish×1Centerpiece
- Chili Rasbora×6Schooling
- Bee Shrimp (Crystal Red / Black)×10Bottom Dweller
Bold & Beautiful
- Gardner's Killifish×1Centerpiece
- Clown Killifish×4Schooling
- Scarlet Badis×1Bottom Dweller
Nano-Friendly Mix
- Chili Rasbora×6Schooling
- Bladder Snail (Pest Snail)×1Bottom Dweller
Gentle Giants
- Mexican Dwarf Crayfish (CPO)×1Centerpiece
- Japanese Ricefish (Medaka)×6Schooling
- Ghost Shrimp×1Bottom Dweller
Low Maintenance Setup
- Chili Rasbora×6Schooling
- Thai Micro Crab×3Bottom Dweller
Schooling Showcase
- Chili Rasbora×6Schooling
- Cherry Shrimp×6Bottom Dweller
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Commonly Mis-Stocked
These fish are frequently added to this tank but may outgrow it or cause problems. Proceed with caution.
African Butterfly Cichlid requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Agassiz's Dwarf Cichlid requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Amazon Leaf Fish requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Bamboo Shrimp requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Beckford's Pencilfish requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Black Neon Tetra requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Black Skirt Tetra requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Bladder Snail (Pest Snail) fits this tank now but grows rapidly — monitor closely and be prepared to upgrade.
Bolivian Ram requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Bristlenose Pleco requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Bronze Corydoras requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
Cardinal Tetra requires at least 60cm of swimming length, which is 18% longer than this tank's 51cm.
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Centerpiece Fish
Bold, eye-catching species that serve as the focal point of your tank. Typically kept singly or in pairs.
Betta (Siamese Fighting Fish)
Betta splendens
The Siamese Fighting Fish is an aquarium icon known for its labyrinth organ (allowing air breathing) and vivid colors. While hardy, they require heated, filtered water (24-30°C). Males are solitary and fiercely territorial. Females are generally less ornate but can be kept in 'sororities' with strict precautions (minimum 5 females in 75L+).
Bumblebee Goby (Brackish)
Brachygobius xanthozonus
A miniature, bottom-dwelling goby famous for its striking black and yellow stripes. While they are often sold as freshwater fish and can survive in it temporarily, they are highly susceptible to fungal infections in fresh water and truly require a brackish setup (SG 1.002-1.005) to thrive long-term. They are notoriously picky eaters, often ignoring flakes in favor of live or frozen foods (like bloodworms or brine shrimp).
Gardner's Killifish
Fundulopanchax gardneri
A stunning, semi-annual killifish native to Nigeria and Cameroon. Known for being relatively hardy and an excellent 'beginner' killifish. They are notorious jumpers and require a tightly fitting lid. While they can be kept in community tanks with similarly sized, fast-moving fish, males can be boisterous and territorial.
Mexican Dwarf Crayfish (CPO)
Cambarellus patzcuarensis
A highly entertaining, fully aquatic dwarf crayfish. In the aquarium trade, the bright orange 'CPO' morph is the most popular. Unlike larger crayfish, they are generally safe with plants and fast-moving mid-to-top dwelling fish. However, they are opportunistic omnivores with claws; they will hunt dwarf shrimp and may nip the fins of slow, long-finned bottom dwellers.
Mosquitofish (Gambusia)
Gambusia affinis
An extremely hardy livebearer historically introduced worldwide for mosquito control. In the aquarium, they are notorious fin-nippers and highly aggressive towards other small fish. They are best kept in species-only setups or indoor/outdoor ponds. Males are significantly smaller than females.
Shell Dweller (Multi)
Neolamprologus multifasciatus
The smallest known cichlid in the world, endemic to Lake Tanganyika. They live, breed, and seek refuge in empty snail shells. They form highly entertaining, constantly digging colonies where multiple generations live together. Sand substrate and an abundance of empty shells (such as escargot shells) are strictly required for their survival and natural behavior.
Schooling Fish
Active swimmers best kept in groups. They bring movement and colour to the mid and upper levels of your tank.
Chili Rasbora
Boraras brigittae
A striking, deeply red nano fish native to the blackwater streams and peat swamps of southern Borneo. They are extremely peaceful and require a mature, densely planted aquarium with soft, acidic water. Due to their tiny size, they are completely safe with adult dwarf shrimp and are ideal for nano setups.
Clown Killifish
Epiplatys annulatus
A striking nano killifish resembling a tiny rocket. Native to West African swamps, they have distinct black and yellow vertical bands. They are strictly surface dwellers (top-level) and are non-annual, meaning they live longer than annual killifish (2-3+ years). They are notorious jumpers and require a tight lid.
Ember Tetra
Hyphessobrycon amandae
The Ember Tetra is a striking, fiery orange-red nano fish native to the Araguaia River basin in Brazil. Extremely peaceful and active, they are perfect for planted and blackwater aquariums. They are tight schoolers and must be kept in groups to feel secure and display their best colors.
Gertrude's Spotted Blue-eye
Pseudomugil gertrudae
A stunning, highly active nano fish native to Australia and New Guinea. Known for their striking blue eyes and the males' spectacular, heavily spotted fins which they flare during dominance displays. They are peaceful but require being kept in shoals to thrive and exhibit natural behaviors.
Japanese Ricefish (Medaka)
Oryzias latipes
A hardy, small, and colorful fish native to East Asia. Extremely popular in the outdoor pond hobby and nano aquariums. They are 'amphidromous' (tolerant of salinity changes) and can survive a wide range of temperatures, making them excellent tub/pond fish. They are surface dwellers that look best when viewed from above (top-down).
Neon Tetra
Paracheirodon innesi
One of the most iconic freshwater fish in the hobby, famous for its striking iridescent blue and red stripes. Originally from the blackwater streams of the Amazon basin, they prefer slightly cooler water than many tropical fish and must be kept in schools to thrive, display natural behaviors, and feel secure.
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Bottom Dwellers
Species that inhabit the lower reaches of the aquarium, helping keep the substrate clean and adding activity to the tank floor.
Amano Shrimp
Caridina multidentata
A highly popular, industrious freshwater shrimp renowned for its unmatched algae-eating abilities. Popularized by aquascaper Takashi Amano, they are significantly larger and hardier than most dwarf shrimp (like Cherry Shrimp). They are notorious food-thieves during feeding time and excellent escape artists, requiring a tight-fitting lid. Their larvae require saltwater to develop, so they will not overpopulate in a freshwater aquarium.
Assassin Snail
Clea helena
A highly effective and popular carnivorous freshwater snail used primarily for pest snail control. They actively hunt and consume smaller snails like bladder, ramshorn, and pond snails. Featuring a striking yellow and dark brown spiraled shell, they are a functional and attractive addition to aquariums. Unlike many aquatic snails, they are not hermaphroditic and reproduce quite slowly.
Bee Shrimp (Crystal Red / Black)
Caridina cantonensis
A sensitive, highly prized dwarf shrimp species known for its vivid red/white or black/white banding. Unlike the hardy Cherry Shrimp (Neocaridina), Bee Shrimp require cool, soft, acidic water and typically require active buffering soil to thrive. They are peaceful grazers perfect for specific biotope setups.
Bladder Snail (Pest Snail)
Physella acuta
A tiny, fast-moving freshwater snail almost universally introduced accidentally via live aquarium plants. While frequently labeled a 'pest' due to their rapid, prolific reproduction, they are actually an excellent cleanup crew. They consume algae, uneaten food, and decaying plant matter without harming healthy plants. They are hermaphroditic and can self-fertilize, meaning a single snail can start a massive colony.
Celestial Pearl Danio (Galaxy Rasbora)
Danio margaritatus
A breathtaking nano fish native to small, vegetated ponds in Myanmar. They feature a midnight blue body covered in pearlescent spots with striking red and black striped fins. CPDs are notoriously shy and require heavily planted aquariums to feel secure. Males will constantly display and mock-spar with each other, so a larger group is essential to disperse this behavior.
Cherry Shrimp
Neocaridina davidi
One of the most popular and hardy freshwater invertebrates in the hobby. They come in a rainbow of selectively bred colors. They are excellent scavengers and algae eaters, perfect for nano planted tanks. They are completely peaceful and have a negligible bioload, though they are highly vulnerable to predation by almost any fish with a mouth large enough to eat them.
Other Compatible Species
Additional species that are compatible with this tank size but don't fall neatly into the categories above.
Endler's Livebearer
Poecilia wingei
A tiny, vibrant, and highly active livebearer closely related to the Guppy. Males display intense, neon colors and patterns, while females are larger and plainly colored. They are prolific breeders and require hard, alkaline water to thrive.
Guppy
Poecilia reticulata
One of the most iconic and widely kept aquarium fish. Renowned for their incredible colors, hardiness, and prolific breeding. As livebearers, they give birth to fully formed, free-swimming fry. Males constantly pursue females for mating; therefore, a ratio of at least 2 females per male is strongly recommended to disperse stress.
Honey Gourami
Trichogaster chuna
The smallest and most peaceful member of the Trichogaster genus. Ideally suited for planted nano aquariums. Unlike the aggressive Dwarf Gourami (*T. lalius*), Honey Gouramis are timid and gentle. True Honey Gouramis rarely exceed 5cm. Note: Many bright red fish sold as 'Red Honey' or 'Red Robin' are actually Thick-lipped Gouramis (*T. labiosa*), which grow larger.
Platy
Xiphophorus maculatus
A quintessential community fish known for its durability and massive variety of colors. Native to Central America, Platies are livebearers, meaning they give birth to free-swimming fry. They are peaceful, active grazers that require hard, alkaline water to thrive. They are excellent for beginners but breed prolifically.
Frequently Asked Questions — 10 Gallon Standard
How many fish can I put in a 10 Gallon Standard?
The 10 Gallon Standard (38 L / 10 gal) is compatible with 37 species in our database. The actual number of individual fish depends on the species mix — use the stocking recipes above as a starting point and aim to keep the total bioload below 85% of capacity.
What is the best centrepiece fish for a 10 Gallon Standard?
Popular centrepiece options for this tank include Betta (Siamese Fighting Fish), Bumblebee Goby (Brackish), Gardner's Killifish. A centrepiece fish should be the focal point of your aquarium — choose one with colours and behaviour that complement your other species.
What schooling fish work in a 10 Gallon Standard?
Great schooling options include Chili Rasbora, Clown Killifish, Ember Tetra. Schooling fish should be kept in groups of at least 6 to encourage natural behaviour and reduce stress.
What bottom dwellers suit a 10 Gallon Standard?
Suitable bottom dwellers include Amano Shrimp, Assassin Snail, Bee Shrimp (Crystal Red / Black). These species occupy the lower zone of your tank, helping to keep the substrate tidy and adding activity to an often-overlooked area.
What temperature should a 10 Gallon Standard be?
The ideal temperature depends on the species you keep. Most tropical freshwater fish thrive between 24–27°C (75–80°F). Check each species' requirements and aim for the overlapping range that suits all your inhabitants.