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

Barbs (10)

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

Cichlids (14)

Species	Adult size	Min tank	Group	Temperament	Temp / links	Plan
Bolivian Ram Mikrogeophagus altispinosus	8 cm	20 gal	pair	peaceful	24–27°C · tank mates	Plan
Cockatoo Dwarf Cichlid (Apisto Cacatuoides) Apistogramma cacatuoides	8 cm	20 gal	—	territorial	24–29°C	Plan
Convict Cichlid Amatitlania nigrofasciata	12 cm	40 gal	—	aggressive	24–28°C	Plan
Discus Symphysodon aequifasciatus	20 cm	75 gal	6+	peaceful	28–30°C · tank mates	Plan
Electric Blue Acara Andinoacara pulcher	16 cm	30 gal	—	semi-aggressive	22–28°C	Plan
Firemouth Cichlid Thorichthys meeki	15 cm	30 gal	—	territorial	23–29°C	Plan
Freshwater Angelfish Pterophyllum scalare	15 cm	29 gal	—	semi-aggressive	24–30°C · tank mates	Plan
German Blue Ram Mikrogeophagus ramirezi	5 cm	20 gal	pair	peaceful	27–30°C · tank mates	Plan
Green Severum Heros efasciatus	30 cm	55 gal	—	semi-aggressive	24–29°C	Plan
Jewel Cichlid Hemichromis bimaculatus	14 cm	30 gal	—	aggressive	23–27°C	Plan
Keyhole Cichlid Cleithracara maronii	11 cm	30 gal	pair	peaceful	22–28°C	Plan
Kribensis (Rainbow Krib) Pelvicachromis pulcher	9 cm	20 gal	pair	territorial	24–27°C	Plan
Multifasciatus Shell-Dweller Neolamprologus multifasciatus	4 cm	10 gal	pair	territorial	24–27°C	Plan
Oscar Astronotus ocellatus	35 cm	100 gal	—	predatory	23–28°C	Plan

Coldwater (5)

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

Corydoras (7)

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

Danios (5)

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

Invertebrates (7)

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

Killifish (3)

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

Livebearers (6)

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

Loaches (10)

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

Oddball (4)

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

Plecos & Catfish (9)

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

Rainbowfish (4)

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

Rasboras (7)

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

Tetras (20)

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

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?

Tap a fish name for its care guide, or use the "Plan" button to load that species 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