AI illustration of a left-facing adult male wild-color zebrafish with short fins and blue horizontal stripes extending onto the tail

Zebra danio

Danio rerio

A slender, active fish with horizontal stripes

The natural short-fin form has a slender body and conspicuous horizontal stripes. Keep a group with clear horizontal swimming space, and avoid slow-moving, long-finned companions.

Length and basis: About 5–6 cm · basis unverified
Reference temperature: 18–24 °C
Captive lifespan: Unknown (no verified lifespan adopted)
pH: 6–8 (source care reference)
Hardness: Unknown

Active; avoid slow-moving, long-finned companions.

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Same-species behaviour

Keep at least 5–6 together rather than isolated individuals.

Space requirements

The existing care reference starts at about 75 L in a long aquarium; horizontal swimming space matters.

Diet and feeding

Offer small pellets, flakes and suitably sized live or frozen foods.

Measurement notes and sources

The existing reference gives about 5–6 cm without specifying SL or TL. Do not use this figure to calibrate the illustration.