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.

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

The fishes 19 fish · new every day

Chili rasbora

Chili rasbora ≈

Rasboras & danios · BorarasStaple

  • 20–28°C
  • pH 4–7
  • Calm
  • 0.8 in
  • Mid
  • Mixed
  • Peaceful
  • 8+ group!
Peat swamps of southwest Borneo

Chili rasbora

Boraras brigittae

Peat swamps of southwest Borneo · swamp or paddy

Temperature
20–28°C
pH
4–7
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: Daiju Azuma, CC BY-SA 4.0

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

Golden pencilfish

Give us a picture and get credit! ≈

Tetras · NannostomusStaple

  • 24–28°C
  • pH 5.5–7.5
  • Calm
  • 1.8 in
  • Top/mid
  • Mixed
  • Peaceful
  • 6+ group!
Amazon basin and the Guianas

Golden pencilfish

Nannostomus beckfordi

Amazon basin and the Guianas · blackwater stream

Temperature
24–28°C
pH
5.5–7.5
Adult size
1.8 in · 4.5 cm
Flow
Calm
Swims
Top and mid-water
Temperament
Peaceful
Diet
Omnivore
Group
6+
Typical price
$3–6
Rarity
Pet-store staple
View full profile

Showing 19 of 19