Freshwater Community Fish List

Q: How many freshwater fish species does TankStocking cover?

TankStocking's database holds 126 sourced freshwater species — tetras, rasboras, barbs, danios, livebearers, corydoras, plecos, loaches, cichlids, rainbowfish, killifish, gouramis, coldwater fish and invertebrates — each with sourced size, tank, group and temperament data.

Every one of the 126 sourced freshwater species in TankStocking, grouped by family, with the figures that decide whether they can live together. Tap any fish to load it into the planner.

This is the reference behind the stocking planner: adult size, minimum tank, group needs, temperament and temperature for each species, all sourced and dated (v2026.06). For the highest-demand fish, follow the tank mates link to a full compatibility guide. To see how the verdicts are reached, read the methodology.

Anabantoids (Bettas/Gouramis) (15)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Banded Gourami Trichogaster fasciata	10 cm	20 gal	—	semi-aggressive	21–28°C
Betta (Siamese Fighting Fish) Betta splendens	6.5 cm	5 gal	—	territorial	24–28°C · tank mates
Chocolate Gourami Sphaerichthys osphromenoides	5 cm	15 gal	6+	peaceful	26–31°C
Croaking Gourami Trichopsis vittata	7 cm	15 gal	—	peaceful	22–28°C
Dwarf Gourami Trichogaster lalius	8.5 cm	10 gal	—	peaceful	25–28°C · tank mates
Honey Gourami Trichogaster chuna	5 cm	10 gal	—	peaceful	23–28°C · tank mates
Kissing Gourami Helostoma temminkii	25 cm	75 gal	—	semi-aggressive	22–30°C
Licorice Gourami Parosphromenus deissneri	4 cm	10 gal	pair	peaceful	22–28°C
Moonlight Gourami Trichopodus microlepis	15 cm	30 gal	—	peaceful	25–30°C
Paradise Fish Macropodus opercularis	8 cm	20 gal	—	aggressive	16–26°C
Peaceful Betta (Crescent Betta) Betta imbellis	6 cm	10 gal	—	semi-aggressive	21–28°C
Pearl Gourami Trichopodus leerii	12 cm	30 gal	—	peaceful	24–28°C · tank mates
Snakeskin Gourami Trichopodus pectoralis	25 cm	55 gal	—	peaceful	22–30°C
Sparkling (Pygmy) Gourami Trichopsis pumila	4 cm	10 gal	pair	peaceful	24–28°C
Three-spot (Blue/Opaline/Gold) Gourami Trichopodus trichopterus	13 cm	30 gal	—	semi-aggressive	22–28°C

Barbs (10)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Bala Shark Balantiocheilos melanopterus	35 cm	150 gal	4+	semi-aggressive	22–28°C
Checker Barb Oliotius oligolepis	5 cm	20 gal	6+	peaceful	20–25°C
Cherry Barb Puntius titteya	5 cm	15 gal	6+	peaceful	23–27°C
Denison Barb (Roseline Shark) Sahyadria denisonii	15 cm	55 gal	6+	semi-aggressive	20–25°C
Five-banded Barb Desmopuntius pentazona	5 cm	20 gal	8+	peaceful	23–28°C
Gold Barb Barbodes semifasciolatus	8 cm	20 gal	6+	peaceful	18–26°C
Odessa Barb Pethia padamya	8 cm	20 gal	6+	semi-aggressive	16–26°C
Rosy Barb Pethia conchonius	14 cm	30 gal	6+	semi-aggressive	18–24°C
Tiger Barb Puntigrus tetrazona	7 cm	20 gal	6+	semi-aggressive	20–26°C · tank mates
Tinfoil Barb Barbonymus schwanenfeldii	35 cm	150 gal	5+	semi-aggressive	22–28°C

Cichlids (14)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Bolivian Ram Mikrogeophagus altispinosus	8 cm	20 gal	pair	peaceful	24–27°C · tank mates
Cockatoo Dwarf Cichlid (Apisto Cacatuoides) Apistogramma cacatuoides	8 cm	20 gal	—	territorial	24–29°C
Convict Cichlid Amatitlania nigrofasciata	12 cm	40 gal	—	aggressive	24–28°C
Discus Symphysodon aequifasciatus	20 cm	55 gal	5+	peaceful	28–30°C · tank mates
Electric Blue Acara Andinoacara pulcher	16 cm	30 gal	—	semi-aggressive	22–28°C
Firemouth Cichlid Thorichthys meeki	15 cm	30 gal	—	territorial	23–29°C
Freshwater Angelfish Pterophyllum scalare	15 cm	29 gal	—	semi-aggressive	24–30°C · tank mates
German Blue Ram Mikrogeophagus ramirezi	5 cm	20 gal	pair	peaceful	27–30°C · tank mates
Green Severum Heros efasciatus	30 cm	55 gal	—	semi-aggressive	24–29°C
Jewel Cichlid Hemichromis bimaculatus	14 cm	30 gal	—	aggressive	23–27°C
Keyhole Cichlid Cleithracara maronii	11 cm	30 gal	pair	peaceful	22–28°C
Kribensis (Rainbow Krib) Pelvicachromis pulcher	9 cm	20 gal	pair	territorial	24–27°C
Multifasciatus Shell-Dweller Neolamprologus multifasciatus	4 cm	10 gal	pair	territorial	24–27°C
Oscar Astronotus ocellatus	35 cm	75 gal	—	predatory	23–28°C

Coldwater (5)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Common Goldfish Carassius auratus	30 cm	75 gal	pair	peaceful	15–24°C
Fancy Goldfish Carassius auratus	20 cm	30 gal	—	peaceful	18–23°C · tank mates
Gold White Cloud Mountain Minnow Tanichthys albonubes (gold form)	4 cm	15 gal	8+	peaceful	14–22°C
Rosy Red Minnow (Fathead Minnow) Pimephales promelas	7 cm	20 gal	6+	peaceful	10–24°C
White Cloud Mountain Minnow Tanichthys albonubes	4 cm	15 gal	8+	peaceful	14–22°C

Corydoras (7)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Bronze Corydoras Corydoras aeneus	7 cm	20 gal	6+	peaceful	22–26°C · tank mates
Julii Corydoras Corydoras trilineatus	6 cm	20 gal	6+	peaceful	22–26°C
Panda Corydoras Corydoras panda	5 cm	20 gal	6+	peaceful	20–25°C
Peppered Corydoras Corydoras paleatus	7 cm	20 gal	6+	peaceful	18–24°C
Pygmy Corydoras Corydoras pygmaeus	3 cm	10 gal	6+	peaceful	22–26°C
Salt and Pepper Corydoras Corydoras habrosus	3.5 cm	10 gal	6+	peaceful	20–26°C
Sterbai Corydoras Corydoras sterbai	6.5 cm	20 gal	6+	peaceful	24–28°C

Danios (5)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Celestial Pearl Danio Celestichthys margaritatus	2.1 cm	10 gal	8+	peaceful	20–26°C
Dwarf Emerald Rasbora Celestichthys erythromicron	2 cm	10 gal	8+	peaceful	20–24°C
Giant Danio Devario aequipinnatus	12 cm	30 gal	6+	semi-aggressive	22–26°C
Pearl Danio Danio albolineatus	5.5 cm	20 gal	8+	peaceful	16–25°C
Zebra Danio Danio rerio	5 cm	10 gal	6+	peaceful	18–25°C · tank mates

Invertebrates (7)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Amano Shrimp Caridina multidentata	5 cm	10 gal	pair	peaceful	18–27°C
Assassin Snail Clea helena (Anentome helena)	2 cm	5 gal	—	peaceful	18–25°C
Bamboo Shrimp (Wood/Fan Shrimp) Atyopsis moluccensis	10 cm	20 gal	—	peaceful	20–27°C
Cherry Shrimp Neocaridina davidi	3 cm	5 gal	pair	peaceful	18–28°C · tank mates
Ghost Shrimp (Glass/Grass Shrimp) Palaemonetes paludosus	4 cm	5 gal	—	peaceful	18–28°C
Mystery Snail Pomacea bridgesii	5 cm	10 gal	—	peaceful	20–28°C · tank mates
Nerite Snail Neritina/Vittina spp.	2.5 cm	5 gal	—	peaceful	22–27°C · tank mates

Killifish (3)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Clown Killifish Epiplatys annulatus	3.5 cm	5 gal	6+	peaceful	20–26°C
Golden Wonder Killifish (Striped Panchax) Aplocheilus lineatus	10 cm	20 gal	—	predatory	22–26°C
Medaka Ricefish (Japanese Ricefish) Oryzias latipes	3.5 cm	10 gal	6+	peaceful	16–26°C

Livebearers (6)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Endler's Livebearer Poecilia wingei	3 cm	10 gal	pair	peaceful	22–28°C · tank mates
Guppy (Fancy) Poecilia reticulata	5 cm	10 gal	pair	peaceful	22–28°C · tank mates
Least Killifish (Dwarf Livebearer) Heterandria formosa	3.5 cm	5 gal	pair	peaceful	16–24°C
Molly (Common / Sailfin) Poecilia sphenops / Poecilia latipinna	12 cm	20 gal	pair	peaceful	24–28°C · tank mates
Platy Xiphophorus maculatus	6 cm	10 gal	pair	peaceful	20–26°C · tank mates
Swordtail Xiphophorus hellerii	12 cm	20 gal	pair	peaceful	22–28°C · tank mates

Loaches (10)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Clown Loach Chromobotia macracanthus	30 cm	125 gal	5+	peaceful	25–30°C
Dojo Loach (Weather Loach) Misgurnus anguillicaudatus	25 cm	55 gal	pair	peaceful	16–24°C
Dwarf Chain Loach Ambastaia sidthimunki	6 cm	20 gal	6+	peaceful	24–28°C
Kuhli Loach Pangio kuhlii	9 cm	20 gal	5+	peaceful	24–30°C · tank mates
Rainbow Shark Epalzeorhynchos frenatum	15 cm	50 gal	—	aggressive	22–27°C
Redtail Black Shark Epalzeorhynchos bicolor	15 cm	55 gal	—	aggressive	22–27°C
Reticulated Hillstream Loach Sewellia lineolata	7 cm	30 gal	pair	peaceful	20–24°C
Siamese Algae Eater Crossocheilus oblongus	15 cm	30 gal	pair	semi-aggressive	22–26°C
Yoyo Loach Botia almorhae	15 cm	40 gal	5+	semi-aggressive	24–30°C
Zebra Loach Botia striata	9 cm	30 gal	5+	peaceful	23–26°C

Oddball (4)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Bumblebee Goby Brachygobius doriae	3.5 cm	10 gal	pair	territorial	22–28°C
Dwarf Pufferfish (Pea Puffer) Carinotetraodon travancoricus	2.5 cm	5 gal	—	semi-aggressive	22–28°C
Peacock Gudgeon Tateurndina ocellicauda	7.5 cm	15 gal	pair	peaceful	22–26°C
Scarlet Badis Dario dario	2 cm	10 gal	—	peaceful	22–26°C

Plecos & Catfish (9)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Asian Stone Catfish Hara jerdoni	3.8 cm	10 gal	pair	peaceful	18–24°C
Bristlenose Pleco Ancistrus sp.	13 cm	30 gal	—	peaceful	23–27°C · tank mates
Clown Pleco Panaqolus maccus	9 cm	20 gal	—	peaceful	23–28°C
Common Pleco Pterygoplichthys pardalis	45 cm	125 gal	—	semi-aggressive	22–30°C
Glass Catfish Kryptopterus vitreolus	6.5 cm	30 gal	6+	peaceful	20–26°C
Otocinclus Otocinclus macrospilus	4 cm	10 gal	6+	peaceful	20–26°C
Pictus Catfish Pimelodus pictus	12.7 cm	55 gal	—	predatory	23–27°C
Rubber Lip Pleco Chaetostoma formosae	12 cm	25 gal	—	peaceful	21–26°C
Upside-Down Catfish Synodontis nigriventris	9 cm	30 gal	4+	peaceful	23–28°C

Rainbowfish (4)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Boesemani Rainbowfish Melanotaenia boesemani	10 cm	30 gal	6+	peaceful	24–28°C
Celebes Rainbowfish Marosatherina ladigesi	8 cm	20 gal	6+	peaceful	22–28°C
Neon Dwarf Rainbowfish Melanotaenia praecox	7 cm	20 gal	6+	peaceful	23–27°C
Threadfin Rainbowfish Iriatherina werneri	4 cm	15 gal	6+	peaceful	22–30°C

Rasboras (7)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Brilliant Rasbora Rasbora einthovenii	9 cm	29 gal	6+	peaceful	22–26°C
Chili Rasbora Boraras brigittae	2 cm	5 gal	8+	peaceful	20–28°C
Green Neon (Kubotai) Rasbora Microdevario kubotai	2 cm	10 gal	8+	peaceful	20–27°C
Harlequin Rasbora Trigonostigma heteromorpha	4.5 cm	15 gal	8+	peaceful	21–28°C · tank mates
Lambchop Rasbora Trigonostigma espei	3 cm	10 gal	8+	peaceful	23–28°C
Mosquito Rasbora (Dwarf Rasbora) Boraras maculatus	2.5 cm	10 gal	8+	peaceful	23–28°C
Scissortail Rasbora Rasbora trilineata	15 cm	30 gal	6+	peaceful	22–28°C

Tetras (20)

Species	Adult size	Min tank	Group	Temperament	Temp / links
Black Neon Tetra Hyphessobrycon herbertaxelrodi	3.5 cm	20 gal	6+	peaceful	23–27°C
Black Phantom Tetra Hyphessobrycon megalopterus	3.6 cm	20 gal	6+	peaceful	20–28°C
Black Skirt Tetra Gymnocorymbus ternetzi	6 cm	20 gal	6+	semi-aggressive	20–26°C
Bleeding Heart Tetra Hyphessobrycon erythrostigma	6 cm	30 gal	8+	peaceful	21–28°C
Buenos Aires Tetra Hyphessobrycon anisitsi	7 cm	30 gal	6+	semi-aggressive	18–28°C
Cardinal Tetra Paracheirodon axelrodi	3 cm	15 gal	6+	peaceful	23–29°C · tank mates
Congo Tetra Phenacogrammus interruptus	8 cm	30 gal	6+	peaceful	23–28°C
Diamond Tetra Moenkhausia pittieri	6 cm	20 gal	6+	semi-aggressive	24–28°C
Dwarf Pencilfish Nannostomus marginatus	2.5 cm	10 gal	8+	peaceful	22–28°C
Ember Tetra Hyphessobrycon amandae	2 cm	10 gal	6+	peaceful	20–28°C · tank mates
Emperor Tetra Nematobrycon palmeri	4.2 cm	20 gal	6+	peaceful	23–27°C
Flame Tetra (Von Rio Tetra) Hyphessobrycon flammeus	4 cm	15 gal	6+	peaceful	22–28°C
Glowlight Tetra Hemigrammus erythrozonus	4 cm	15 gal	6+	peaceful	24–28°C
Lemon Tetra Hyphessobrycon pulchripinnis	4 cm	20 gal	6+	peaceful	20–28°C
Marbled Hatchetfish Carnegiella strigata	4 cm	20 gal	6+	peaceful	24–28°C
Neon Tetra Paracheirodon innesi	3 cm	10 gal	6+	peaceful	21–25°C · tank mates
Rummynose Tetra Hemigrammus rhodostomus	5 cm	20 gal	6+	peaceful	24–27°C · tank mates
Serpae Tetra Hyphessobrycon eques	4 cm	20 gal	6+	semi-aggressive	20–28°C
Silvertip Tetra Hasemania nana	5 cm	20 gal	6+	semi-aggressive	23–28°C
X-ray (Pristella) Tetra Pristella maxillaris	4.5 cm	15 gal	6+	peaceful	22–28°C

Common questions

How many freshwater fish species does TankStocking cover?

TankStocking's database holds 126 sourced freshwater species — tetras, rasboras, barbs, danios, livebearers, corydoras, plecos, loaches, cichlids, rainbowfish, killifish, gouramis, coldwater fish and invertebrates — each with sourced size, tank, group and temperament data.

What is the best community fish for beginners?

Hardy, peaceful schoolers and bottom-dwellers are the safest start: neon and ember tetras, harlequin rasboras, platies, guppies, and corydoras catfish. Use the planner to check any combination before you buy.

How do I use this list to stock my tank?

Click any species to load it into the planner, set your tank size, then add tankmates and watch the live welfare verdict. For a single species, the "tank mates" links show the companions the engine clears.

TankStocking provides planning estimates, not veterinary advice. Every figure is sourced; uncertain values are kept conservative. How this works →

Freshwater Community Fish List

Anabantoids (Bettas/Gouramis) (15)

Barbs (10)

Cichlids (14)

Coldwater (5)

Corydoras (7)

Danios (5)

Invertebrates (7)

Killifish (3)

Livebearers (6)

Loaches (10)

Oddball (4)

Plecos & Catfish (9)

Rainbowfish (4)

Rasboras (7)

Tetras (20)

Popular compatibility questions

Betta (Siamese Fighting Fish)

Freshwater Angelfish

Fancy Goldfish

Common Goldfish

Neon Tetra

Guppy (Fancy)

Molly (Common / Sailfin)

Platy

Tiger Barb

Dwarf Gourami

Honey Gourami

Bristlenose Pleco

Discus

Bolivian Ram

Kuhli Loach

Common questions