Small: 5 to 20 cm
Sardines, anchovies, most aquarium fish and many reef fish. 66 fish.
GroupSharkRayCarpCatfishSalmonidHerringCodTunaPerch-likeCichlidReef fishEelFlatfishLivebearerAncientOther
WaterRivers and lakesEstuaries and mangrovesCoasts and shelvesCoral reefsOpen oceanDeep seaPolar and cold seasCaves and springsBetween sea and river
🇺🇸 United States and 1 moreDesert pupfish
Small desert fish that survives extreme heat and saltOther · Rivers and lakes · 1853
🇺🇸 United StatesDelta smelt
A tiny, endangered fish native to California's Sacramento-San Joaquin River Delta.Other · Rivers and lakes · 1963
WorldThree-spined stickleback
Small northern fish known for rapid evolution and complex breeding.Other · Rivers and lakes
EuropeEuropean bullhead
Small freshwater sculpin found in European rivers and streams.Other · Rivers and lakes
South AsiaGreen spotted puffer
Small brackish water pufferfish with a tiny genomeOther · Rivers and lakes
🇰🇭 Cambodia and 1 moreFigure 8 puffer
A small brackish water pufferfish with distinctive eye-like markings.Other · Rivers and lakes
🇮🇩 IndonesiaCelebes rainbowfish
A small, transparent silverside from Sulawesi streams.Other · Rivers and lakes
Photo credits on this page
The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.
- Desert pupfish: jkirkhart35, CC BY 2.0, source
- Delta smelt: Peterson, B. Moose / U.S. Fish and Wildlife Service, Public domain, source
- Three-spined stickleback: Gilles San Martin, CC BY-SA 2.0, source
- European bullhead: Hans Hillewaert, CC BY-SA 4.0, source
- Green spotted puffer: Starseed, CC BY-SA 3.0 de, source
- Figure 8 puffer: ColdmachineUK, CC BY 2.5, source
- Celebes rainbowfish: Shigella dysenteriae at English Wikipedia, CC BY-SA 3.0, source