Save the Little Fish

Saving the world’s tropical fish, one tank at a time.

Sign in

Freshwater fishes

The fish list

499 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 flowSchoolingL-numbers✓ With photo Basic profiles too

The fishes 75 fish · new every day

Rosy barb

Rosy barb ≈

Barbs · PethiaStaple

  • 18–25°C
  • pH 6–8
  • Gentle
  • 4 in
  • Mid
  • Mixed
  • Peaceful
  • 6+ group!
Rivers of northern India

Rosy barb

Pethia conchonius

Rivers of northern India · river

Temperature
18–25°C
pH
6–8
Adult size
4 in · 10 cm
Flow
Gentle
Swims
Mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$3–6
Rarity
Pet-store staple
View full profile

Photo: Usien, CC0

Discus

Discus ≈

Cichlids · Symphysodon

  • 28–31°C!
  • pH 5–7
  • Calm
  • 7 in
  • Mid
  • Meat
  • Peaceful
  • 5+ group
Floodplain lakes of the Amazon basin

Discus

Symphysodon aequifasciatus

Floodplain lakes of the Amazon basin · flooded forest

Temperature
28–31°C
pH
5–7
Adult size
7 in · 18 cm
Flow
Calm
Swims
Mid-water
Temperament
Peaceful
Diet
Carnivore
Group
5+
Typical price
$60–200
View full profile

Photo: H. Zell, CC BY-SA 3.0

Pearl gourami

Pearl gourami ≈

Gouramis & bettas · Trichopodus

  • 24–28°C
  • pH 6–7.5
  • Calm
  • 5 in
  • Top/mid
  • Mixed
  • Peaceful

Long fins. Fin nippers will pick on it.

Peat swamps of Malaysia, Sumatra and Borneo

Pearl gourami

Trichopodus leerii

Peat swamps of Malaysia, Sumatra and Borneo · swamp or paddy

Temperature
24–28°C
pH
6–7.5
Adult size
5 in · 12 cm
Flow
Calm
Swims
Top and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
1+
Typical price
$7–14

Long fins. Fin nippers will pick on it.

View full profile

Photo: BEDO (Thailand), CC BY-SA 4.0

Neon tetra

Neon tetra ≈

Tetras · ParacheirodonStaple

  • 20–26°C
  • pH 5–7
  • Calm
  • 1.4 in
  • Mid
  • Mixed
  • Peaceful
  • 6+ group!
Upper Amazon basin: Peru, Colombia, Brazil

Neon tetra

Paracheirodon innesi

Upper Amazon basin: Peru, Colombia, Brazil · blackwater stream

Temperature
20–26°C
pH
5–7
Adult size
1.4 in · 3.5 cm
Flow
Calm
Swims
Mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$2–5
Rarity
Pet-store staple
View full profile

Photo: Holger Krisp, CC BY 3.0

Siamese algae eater

Siamese algae eater ≈

Other fish · CrossocheilusStaple

  • 24–26°C
  • pH 6.5–7
  • Gentle
  • 6 in
  • Bottom/mid
  • Veg
  • Peaceful
  • 3+ group
Streams of Thailand and the Malay Peninsula

Siamese algae eater

Crossocheilus oblongus

Streams of Thailand and the Malay Peninsula · stream

Temperature
24–26°C
pH
6.5–7
Adult size
6 in · 15 cm
Flow
Gentle
Swims
Bottom and mid-water
Temperament
Peaceful
Diet
Grazer
Group
3+
Typical price
$4–8
Rarity
Pet-store staple
View full profile

Photo: User:Ark pl wiki, CC BY 3.0

Glowlight tetra

Glowlight tetra ≈

Tetras · HemigrammusStaple

  • 24–28°C
  • pH 5.5–7.5
  • Calm
  • 1.6 in
  • Mid
  • Mixed
  • Peaceful
  • 6+ group!
Essequibo River, Guyana

Glowlight tetra

Hemigrammus erythrozonus

Essequibo River, Guyana · river

Temperature
24–28°C
pH
5.5–7.5
Adult size
1.6 in · 4 cm
Flow
Calm
Swims
Mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$2–5
Rarity
Pet-store staple
View full profile

Photo: h080, CC BY-SA 2.0

Kribensis

Kribensis ≈

Cichlids · Pelvicachromis

  • 24–28°C
  • pH 6–7.5
  • Calm
  • 4 in
  • Bottom/mid
  • Mixed
  • Territorial!
  • 2+ group
Coastal rivers of Nigeria and Cameroon

Kribensis

Pelvicachromis pulcher

Coastal rivers of Nigeria and Cameroon · river

Temperature
24–28°C
pH
6–7.5
Adult size
4 in · 10 cm
Flow
Calm
Swims
Bottom and mid-water
Temperament
Territorial
Diet
Omnivore
Group
2+
Typical price
$8–15
View full profile

Photo: NasserHalaweh, CC BY-SA 4.0

German blue ram

German blue ram ≈

Cichlids · Mikrogeophagus

  • 27–30°C!
  • pH 5–7
  • Calm
  • 2.4 in
  • Bottom/mid
  • Mixed
  • Peaceful
  • 2+ group
Llanos savanna streams, Orinoco basin

German blue ram

Mikrogeophagus ramirezi

Llanos savanna streams, Orinoco basin · stream

Temperature
27–30°C
pH
5–7
Adult size
2.4 in · 6 cm
Flow
Calm
Swims
Bottom and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
2+
Typical price
$12–25
View full profile

Photo: Eric Mengel, Public domain

Pygmy corydoras

Pygmy corydoras ≈

Corydoras · CorydorasStaple

  • 22–26°C
  • pH 6–7.5
  • Calm
  • 1 in
  • Bottom
  • Mixed
  • Peaceful
  • 8+ group!
Rio Madeira basin, Brazil

Pygmy corydoras

Corydoras pygmaeus

Rio Madeira basin, Brazil · river

Temperature
22–26°C
pH
6–7.5
Adult size
1 in · 2.5 cm
Flow
Calm
Swims
Bottom
Temperament
Peaceful
Diet
Omnivore
Group
8+
Typical price
$4–7
Rarity
Pet-store staple
View full profile

Photo: AquaTuer, CC BY-SA 4.0

Bronze corydoras

Bronze corydoras ≈

Corydoras · CorydorasStaple

  • 22–28°C
  • pH 6–8
  • Gentle
  • 2.8 in
  • Bottom
  • Mixed
  • Peaceful
  • 6+ group!
Widespread in South America

Bronze corydoras

Corydoras aeneus

Widespread in South America · stream

Temperature
22–28°C
pH
6–8
Adult size
2.8 in · 7 cm
Flow
Gentle
Swims
Bottom
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$3–6
Rarity
Pet-store staple
View full profile

Photo: Andrew Keller, CC0

Sparkling gourami

Sparkling gourami ≈

Gouramis & bettas · TrichopsisStaple

  • 24–28°C
  • pH 6–7.5
  • Calm
  • 1.6 in
  • Top/mid
  • Meat
  • Peaceful
  • 4+ group
Rice paddies and ditches of Southeast Asia

Sparkling gourami

Trichopsis pumila

Rice paddies and ditches of Southeast Asia · swamp or paddy

Temperature
24–28°C
pH
6–7.5
Adult size
1.6 in · 4 cm
Flow
Calm
Swims
Top and mid-water
Temperament
Peaceful
Diet
Carnivore
Group
4+
Typical price
$4–8
Rarity
Pet-store staple
View full profile

Photo: Zikamoi, CC BY-SA 3.0

Gold spot pleco

L001
Gold spot pleco ≈

Plecos · PterygoplichthysRare

  • 24–28°C
  • pH 5.5–7.5
  • Gentle
  • 12 in!
  • Bottom
  • Mixed
  • Peaceful

A sailfin that grows to about 30 cm and makes a lot of waste.

Tocantins–Araguaia basin, Brazil

Gold spot pleco

L001

Pterygoplichthys joselimaianus

Tocantins–Araguaia basin, Brazil · river

Temperature
24–28°C
pH
5.5–7.5
Adult size
12 in · 30 cm
Flow
Gentle
Swims
Bottom
Temperament
Peaceful
Diet
Omnivore
Breeding
Rarely
Typical price
$15–80
In Canada
Occasional
Rarity
Rare or hard to breed

A sailfin that grows to about 30 cm and makes a lot of waste. Big tanks only.

View full profile

Photo: 5snake5, CC BY-SA 4.0

Tiger barb

Tiger barb ≈

Barbs · PuntigrusStaple

  • 21–27°C
  • pH 6–7.5
  • Gentle
  • 2.8 in
  • Mid
  • Mixed
  • Semi-agg.!
  • 6+ group!

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.

View full profile

Photo: Ingvar-fed, CC BY-SA 3.0

Sterba's corydoras

Sterba's corydoras ≈

Corydoras · Corydoras

  • 24–29°C
  • pH 6–7.6
  • Gentle
  • 2.8 in
  • Bottom
  • Mixed
  • Peaceful
  • 6+ group!
Rio Guaporé, Brazil and Bolivia

Sterba's corydoras

Corydoras sterbai

Rio Guaporé, Brazil and Bolivia · river

Temperature
24–29°C
pH
6–7.6
Adult size
2.8 in · 7 cm
Flow
Gentle
Swims
Bottom
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$6–12
View full profile

Photo: Matthew Mannell, Public domain

Ember tetra

Ember tetra ≈

Tetras · HyphessobryconStaple

  • 23–29°C
  • pH 5.5–7
  • Calm
  • 0.8 in
  • Mid
  • Mixed
  • Peaceful
  • 8+ group!
Rio Araguaia basin, Brazil

Ember tetra

Hyphessobrycon amandae

Rio Araguaia basin, Brazil · river

Temperature
23–29°C
pH
5.5–7
Adult size
0.8 in · 2 cm
Flow
Calm
Swims
Mid-water
Temperament
Peaceful
Diet
Omnivore
Group
8+
Typical price
$3–5
Rarity
Pet-store staple
View full profile

Photo: Cedricguppy - Loury Cédric, CC BY-SA 4.0

Red-fin cactus

L024
Red-fin cactus ≈

Plecos · PseudacanthicusRare

  • 26–30°C
  • pH 5.5–7.5
  • Strong!
  • 16 in!
  • Bottom
  • Meat
  • Aggressive!

Dark body with red fin edges.

Rio Tocantins, Brazil

Red-fin cactus

L024

Pseudacanthicus pitanga

Rio Tocantins, Brazil · rapids

Temperature
26–30°C
pH
5.5–7.5
Adult size
16 in · 40 cm
Flow
Strong
Swims
Bottom
Temperament
Aggressive
Diet
Carnivore
Breeding
Rarely
Typical price
$130–400
In Canada
Rare
Rarity
Rare or hard to breed

Dark body with red fin edges. Large and aggressive.

View full profile

Photo: B. Phalan, CC BY 4.0

Showing 48 of 75