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.

EndangeredRare✓ PopularPeacefulSmall (6 cm or less)Calm waterStrong flowSchoolingL-numbersWith photo Basic profiles too
Showing: Home water: Stream ✕

Stream 13 fish

Amano shrimp

Amano shrimp ≈

Shrimp & snails · CaridinaStaple

  • 20–27°C
  • pH 6.5–7.5
  • Gentle
  • 2 in
  • Bottom
  • Veg
  • Peaceful
  • 3+ group

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

Coastal streams of Japan and Taiwan

Amano shrimp

Caridina multidentata

Coastal streams of Japan and Taiwan · stream

Temperature
20–27°C
pH
6.5–7.5
Adult size
2 in · 5 cm
Flow
Gentle
Swims
Bottom
Temperament
Peaceful
Diet
Grazer
Group
3+
Typical price
$3–6
Rarity
Pet-store staple

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

View full profile

Photo: Jolielover, CC BY 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

Cherry barb

Cherry barb ≈

Barbs · PuntiusStaple

  • 23–27°C
  • pH 6–7.5
  • Calm
  • 2 in
  • Mid/bottom
  • Mixed
  • Peaceful
  • 6+ group!
Shaded forest streams, Sri Lanka

Cherry barb

Puntius titteya

Shaded forest streams, Sri Lanka · stream

Temperature
23–27°C
pH
6–7.5
Adult size
2 in · 5 cm
Flow
Calm
Swims
Mid-water and bottom
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$3–5
Rarity
Pet-store staple
View full profile

Photo: NasserHalaweh, CC BY-SA 4.0

Cherry shrimp

Cherry shrimp ≈

Shrimp & snails · NeocaridinaStaple

  • 18–26°C
  • pH 6.5–8
  • Calm
  • 1 in
  • Bottom
  • Veg
  • Peaceful
  • 10+ group!

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.

View full profile

Photo: TonyZimbinski, CC BY-SA 4.0

Dwarf neon rainbowfish

Dwarf neon rainbowfish ≈

Rainbowfish · Melanotaenia

  • 24–28°C
  • pH 6.5–7.5
  • Gentle
  • 2.4 in
  • Mid/top
  • Mixed
  • Peaceful
  • 6+ group!
Mamberamo River basin, New Guinea

Dwarf neon rainbowfish

Melanotaenia praecox

Mamberamo River basin, New Guinea · stream

Temperature
24–28°C
pH
6.5–7.5
Adult size
2.4 in · 6 cm
Flow
Gentle
Swims
Mid-water and top
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$6–12
View full profile

Photo: Raimond Spekking, CC BY-SA 4.0

Guppy

Guppy ≈

Livebearers · PoeciliaStaple

  • 22–28°C
  • pH 7–8.5
  • Calm
  • 2 in
  • Top/mid
  • Mixed
  • Peaceful
  • 3+ group

Long fins. Fin nippers will pick on it.

Trinidad and northern Venezuela

Guppy

Poecilia reticulata

Trinidad and northern Venezuela · stream

Temperature
22–28°C
pH
7–8.5
Adult size
2 in · 5 cm
Flow
Calm
Swims
Top and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
3+
Typical price
$2–8
Rarity
Pet-store staple

Long fins. Fin nippers will pick on it.

View full profile

Photo: Holger Krisp, CC BY 3.0

Otocinclus

Otocinclus ≈

Catfish · OtocinclusStaple

  • 21–27°C
  • pH 6–7.5
  • Gentle
  • 1.6 in
  • Bottom/mid
  • Veg
  • Peaceful
  • 6+ group!
Streams across South America

Otocinclus

Otocinclus vittatus

Streams across South America · stream

Temperature
21–27°C
pH
6–7.5
Adult size
1.6 in · 4 cm
Flow
Gentle
Swims
Bottom and mid-water
Temperament
Peaceful
Diet
Grazer
Group
6+
Typical price
$4–7
Rarity
Pet-store staple
View full profile

Photo: No machine-readable author provided. Chle assumed (based on copyright claims)., CC BY-SA 3.0

Panda corydoras

Panda corydoras ≈

Corydoras · CorydorasStaple

  • 20–25°C
  • pH 6–7.5
  • Gentle
  • 2 in
  • Bottom
  • Mixed
  • Peaceful
  • 6+ group!
Clear Andean foothill streams, Peru

Panda corydoras

Corydoras panda

Clear Andean foothill streams, Peru · stream

Temperature
20–25°C
pH
6–7.5
Adult size
2 in · 5 cm
Flow
Gentle
Swims
Bottom
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$5–9
Rarity
Pet-store staple
View full profile

Photo: Chronotopian, CC BY-SA 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

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

White cloud mountain minnow

White cloud mountain minnow ≈

Rasboras & danios · TanichthysStaple

  • 14–22°C!
  • pH 6–8
  • Gentle
  • 1.6 in
  • Top/mid
  • Mixed
  • Peaceful
  • 6+ group!
Mountain streams near Guangzhou, China

White cloud mountain minnow

Tanichthys albonubes

Mountain streams near Guangzhou, China · stream

Temperature
14–22°C
pH
6–8
Adult size
1.6 in · 4 cm
Flow
Gentle
Swims
Top and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$2–4
Rarity
Pet-store staple
View full profile

Photo: Ethmostigmus, CC BY-SA 4.0

Zebra danio

Zebra danio ≈

Rasboras & danios · DanioStaple

  • 18–26°C
  • pH 6.5–8
  • Strong!
  • 2 in
  • Top/mid
  • Mixed
  • Peaceful
  • 6+ group!
Streams and paddies of India and Bangladesh

Zebra danio

Danio rerio

Streams and paddies of India and Bangladesh · stream

Temperature
18–26°C
pH
6.5–8
Adult size
2 in · 5 cm
Flow
Strong
Swims
Top and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$2–4
Rarity
Pet-store staple
View full profile

Photo: Roundish, CC0

Platy

Give us a picture and get credit! ≈

Livebearers · XiphophorusStaple

  • 20–26°C
  • pH 7–8.2
  • Calm
  • 2 in
  • Mid/top
  • Mixed
  • Peaceful
  • 3+ group
Atlantic slope of Mexico and Central America

Platy

Xiphophorus maculatus

Atlantic slope of Mexico and Central America · stream

Temperature
20–26°C
pH
7–8.2
Adult size
2 in · 5 cm
Flow
Calm
Swims
Mid-water and top
Temperament
Peaceful
Diet
Omnivore
Group
3+
Typical price
$2–5
Rarity
Pet-store staple
View full profile

Showing 13 of 13