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Freshwater fishes

The fish list

542 species, each with the water it needs, who it gets along with, and where it comes from. Find one, or browse by family, genus or river.

EndangeredRarePopularPeacefulSmall (6 cm or less)Calm waterStrong flow✓ SchoolingL-numbersWith photo ✓ Basic profiles too

The fishes 39 fish · new every day

Cherry shrimp

Cherry shrimp ≈

Shrimp & snails · NeocaridinaStaple

Invertebrate. Many fish will eat it, so choose tank mates with care.

Streams of Taiwan and eastern China

Cherry shrimp

Neocaridina davidi

Streams of Taiwan and eastern China · stream

Temperature
18–26°C
pH
6.5–8
Adult size
1 in · 2.5 cm
Flow
Calm
Swims
Bottom
Temperament
Peaceful
Diet
Grazer
Group
10+
Typical price
$2–5
Rarity
Pet-store staple

Invertebrate. Many fish will eat it, so choose tank mates with care.

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Photo: TonyZimbinski, CC BY-SA 4.0

Jacobfreibergi peacock

Jacobfreibergi peacock ≈

Cichlids · AulonocaraLC

Predator. Eats any fish that fits in its mouth.

Lake Malawi: southern lake - Cape Maclear, Otter Point, Monkey Bay, Undu Reef

Jacobfreibergi peacock

Aulonocara jacobfreibergi

Lake Malawi: southern lake - Cape Maclear, Otter Point, Monkey Bay, Undu Reef · lake

Temperature
25–29°C
pH
7.5–9
Adult size
6 in · 15 cm
Flow
Gentle
Swims
Bottom
Temperament
Semi-aggressive
Diet
Carnivore
Group
5+
Status in the wild
Least concern

Predator. Eats any fish that fits in its mouth.

Hard water. Needs hard, alkaline water, like its rift lake.

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Photo: Lerdsuwa, CC BY-SA 3.0

Demasoni

Demasoni ≈

Cichlids · ChindongoVU

Predator. Eats any fish that fits in its mouth.

Lake Malawi: Pombo Rocks, Tanzanian coast

Demasoni

Chindongo demasoni

Lake Malawi: Pombo Rocks, Tanzanian coast · lake

Temperature
24–28°C
pH
7.6–8.8
Adult size
3 in · 7.5 cm
Flow
Gentle
Swims
Mid-water
Temperament
Aggressive
Diet
Herbivore
Group
6+
Status in the wild
Vulnerable

Predator. Eats any fish that fits in its mouth.

Hard water. Needs hard, alkaline water, like its rift lake.

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Photo: dinomariobob, CC0

Tiger barb

Tiger barb ≈

Barbs · PuntigrusStaple

Fin nipper. Keep it away from long-finned fish.

Sumatra and Borneo

Tiger barb

Puntigrus tetrazona

Sumatra and Borneo · stream

Temperature
21–27°C
pH
6–7.5
Adult size
2.8 in · 7 cm
Flow
Gentle
Swims
Mid-water
Temperament
Semi-aggressive
Diet
Omnivore
Group
6+
Typical price
$3–5
Rarity
Pet-store staple

Fin nipper. Keep it away from long-finned fish.

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Photo: Ingvar-fed, CC BY-SA 3.0

Black skirt tetra

Black skirt tetra ≈

Tetras · GymnocorymbusStaple

Fin nipper. Keep it away from long-finned fish.

Paraguay and Guaporé basins

Black skirt tetra

Gymnocorymbus ternetzi

Paraguay and Guaporé basins · river

Temperature
21–27°C
pH
6–7.5
Adult size
2.4 in · 6 cm
Flow
Gentle
Swims
Mid-water
Temperament
Semi-aggressive
Diet
Omnivore
Group
6+
Typical price
$3–5
Rarity
Pet-store staple

Fin nipper. Keep it away from long-finned fish.

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Photo: emptyvi, CC BY-SA 3.0

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