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 flow✓ SchoolingL-numbersWith photo Basic profiles too
Showing: Rarity: Common ✕

Common 4 fish

Boeseman's rainbowfish

Boeseman's rainbowfish ≈

Rainbowfish · Melanotaenia

  • 26–30°C
  • pH 7–8
  • Gentle
  • 4 in
  • Mid/top
  • Mixed
  • Peaceful
  • 6+ group!
Ayamaru Lakes, West Papua

Boeseman's rainbowfish

Melanotaenia boesemani

Ayamaru Lakes, West Papua · lake

Temperature
26–30°C
pH
7–8
Adult size
4 in · 10 cm
Flow
Gentle
Swims
Mid-water and top
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$8–15
View full profile

Photo: H. Zell, CC BY-SA 3.0

Congo tetra

Congo tetra ≈

Tetras · Phenacogrammus

  • 23–27°C
  • pH 6–7.5
  • Gentle
  • 3 in
  • Mid
  • Mixed
  • Peaceful
  • 6+ group!
Congo River basin, DR Congo

Congo tetra

Phenacogrammus interruptus

Congo River basin, DR Congo · river

Temperature
23–27°C
pH
6–7.5
Adult size
3 in · 8 cm
Flow
Gentle
Swims
Mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$6–12
View full profile

Photo: André Karwath aka Aka, CC BY-SA 2.5

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

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

Showing 4 of 4