Fish Database

Browse fish and their care needs

🐠freshwater

Jack Dempsey

Rocio octofasciata

aggressivemoderate care
55 gal mincarnivore🌡️ 72–82°FpH 6.5–7.5

Large, feisty cichlid with a strong personality. Needs tank mates that can hold their own.

🐠freshwater

Convict Cichlid

Amatitlania nigrofasciata

aggressiveeasy care
30 gal minomnivore🌡️ 75–82°FpH 6.5–8

Hardy, bold cichlid that breeds readily and fiercely defends its territory.

🐠freshwater

Electric Yellow Cichlid

Labidochromis caeruleus

semi-aggressiveeasy care
30 gal minomnivore🌡️ 75–82°FpH 7.8–8.6

Bright yellow African cichlid from Lake Malawi. Relatively peaceful for a cichlid.

🐠freshwater

Pearl Gourami

Trichopodus leerii

peacefuleasy care
30 gal minomnivore🌡️ 77–82°FpH 6–7

Elegant, mild-mannered gourami with a pearl-patterned body. Likes planted tanks.

🐠freshwater

Dwarf Gourami

Trichogaster lalius

peacefuleasy care
10 gal minomnivore🌡️ 77–82°FpH 6–7.5

Small, vividly colored labyrinth fish. Males can be territorial with each other.

🐠freshwater

Rainbow Shark

Epalzeorhynchos frenatum

semi-aggressiveeasy care
30 gal minomnivore🌡️ 75–81°FpH 6.5–7.5

Sleek, shark-like fish that's territorial with its own kind and similar bottom dwellers.

🐠freshwater

Otocinclus Catfish

Otocinclus vittatus

peacefulmoderate care
10 gal minherbivore🌡️ 72–79°FpH 6–7.5

Tiny algae grazer that needs a mature tank with steady biofilm and algae.

🐠freshwater

Koi

Cyprinus rubrofuscus

peacefulmoderate care
250 gal minomnivore🌡️ 59–77°FpH 6.5–8

Large, long-lived pond fish. Best suited to ponds or very large aquariums.

🐠freshwater

White Cloud Mountain Minnow

Tanichthys albonubes

peacefuleasy care
10 gal minomnivore🌡️ 64–72°FpH 6–8

Hardy, cool-water schooling fish that's perfect for unheated tanks.

🐠freshwater

Bolivian Ram

Mikrogeophagus altispinosus

peacefuleasy care
30 gal minomnivore🌡️ 77–82°FpH 6–7.5

Durable dwarf cichlid that's easier than the German Blue Ram and good for communities.

🐠freshwater

Silver Dollar

Metynnis hypsauchen

peacefuleasy care
55 gal minherbivore🌡️ 75–82°FpH 5–7

Disc-shaped, schooling fish that eats live plants and needs a large swimming space.

🐠freshwater

Bala Shark

Balantiocheilos melanopterus

peacefulmoderate care
150 gal minomnivore🌡️ 72–84°FpH 6–8

Large, active schooling fish. Needs a very big tank despite its shark-like name.

🐠freshwater

Silver Arowana

Osteoglossum bicirrhosum

aggressivedifficult care
250 gal mincarnivore🌡️ 75–82°FpH 6–7

Surface-dwelling predator that grows huge and needs a massive tank with a covered top.

🐠freshwater

Flowerhorn Cichlid

Hybrid

aggressivemoderate care
75 gal minomnivore🌡️ 78–82°FpH 6.5–7.5

Man-made hybrid cichlid with a prominent head hump. Best kept alone.

🐠freshwater

Senegal Bichir

Polypterus senegalus

semi-aggressivemoderate care
90 gal mincarnivore🌡️ 75–82°FpH 6.5–7.5

Ancient, eel-like predator. Will eat anything that fits its mouth; needs a covered tank.

🐠freshwater

Corydoras Catfish

Corydoras paleatus

peacefuleasy care
20 gal minomnivore🌡️ 72–79°FpH 6–7.5

Bottom-dwelling schooling catfish that helps keep the substrate clean. Best kept in groups of five or more.

🐠freshwater

Platy

Xiphophorus maculatus

peacefuleasy care
10 gal minomnivore🌡️ 70–78°FpH 7–8.2

Colorful, hardy livebearer that's easy to breed and great for community tanks.

🐠freshwater

Swordtail

Xiphophorus hellerii

peacefuleasy care
20 gal minomnivore🌡️ 72–79°FpH 7–8

Active livebearer named for the male's elongated tail fin. Males can be lively chasers.

🐠freshwater

Molly

Poecilia sphenops

peacefuleasy care
20 gal minomnivore🌡️ 72–82°FpH 7.5–8.5

Hardy livebearer that prefers slightly brackish, alkaline water and eats algae.

🐠freshwater

Zebra Danio

Danio rerio

peacefuleasy care
10 gal minomnivore🌡️ 64–77°FpH 6.5–7

Fast, energetic schooling fish with bold stripes. Very hardy and great for beginners.

🐠freshwater

Harlequin Rasbora

Trigonostigma heteromorpha

peacefuleasy care
10 gal minomnivore🌡️ 72–81°FpH 5–7

Small, peaceful schooling fish with a distinctive black triangle marking.

🐠freshwater

Cherry Barb

Puntius titteya

peacefuleasy care
20 gal minomnivore🌡️ 73–81°FpH 6–7

Small, brightly colored schooling barb that's calmer than many of its relatives.

🐠freshwater

Tiger Barb

Puntigrus tetrazona

semi-aggressiveeasy care
30 gal minomnivore🌡️ 75–82°FpH 6–7

Lively schooling fish with bold stripes. Can nip fins of slow-moving tank mates.

🐠freshwater

Kuhli Loach

Pangio kuhlii

peacefuleasy care
20 gal minomnivore🌡️ 75–86°FpH 5.5–7

Eel-like bottom dweller that stays hidden by day and scavenges at night.

🐠freshwater

Bristlenose Pleco

Ancistrus cirrhosus

peacefuleasy care
30 gal minherbivore🌡️ 72–82°FpH 6.5–7.5

Algae-eating catfish that stays smaller than common plecos. Needs driftwood to graze.

🐠freshwater

German Blue Ram

Mikrogeophagus ramirezi

peacefulmoderate care
20 gal minomnivore🌡️ 78–85°FpH 5–7

Stunning dwarf cichlid that needs warm, clean, well-maintained water.

🐠freshwater

Discus

Symphysodon discus

peacefuldifficult care
55 gal mincarnivore🌡️ 82–88°FpH 6–7

Regal, disc-shaped cichlids that demand pristine, warm water and consistent care.

🐠freshwater

Kribensis Cichlid

Pelvicachromis pulcher

semi-aggressiveeasy care
30 gal minomnivore🌡️ 75–79°FpH 6–7

Colorful dwarf cichlid that becomes territorial when breeding.

🐠freshwater

Neon Tetra

Paracheirodon innesi

peacefuleasy care
10 gal minomnivore🌡️ 72–78°FpH 6–7

A small, colorful schooling fish perfect for community tanks.

🐠freshwater

Guppy

Poecilia reticulata

peacefuleasy care
10 gal minomnivore🌡️ 72–82°FpH 7–8

Hardy, lively livebearer with bright colors. Great for beginners.

🐠freshwater

Betta

Betta splendens

semi-aggressiveeasy care
5 gal mincarnivore🌡️ 76–82°FpH 6.5–7.5

Beautiful solitary fish. Males should not be housed together.

🐠freshwater

Angelfish

Pterophyllum scalare

semi-aggressivemoderate care
30 gal minomnivore🌡️ 75–82°FpH 6–7

Elegant cichlid that can be territorial, especially when breeding.

🐠freshwater

Goldfish

Carassius auratus

peacefuleasy care
30 gal minomnivore🌡️ 65–75°FpH 7–7.5

Classic coldwater fish. Needs a large tank and good filtration.

🐠freshwater

Oscar

Astronotus ocellatus

aggressivemoderate care
55 gal mincarnivore🌡️ 74–81°FpH 6–7.5

Large, personable cichlid. Best kept with similar-sized tank mates.