Aquatic · Danio rerio
Zebra Danio Care Guide: Hardy Schooling Fish
A hardy, adaptable fish perfect for beginners. Learn about Zebra Danios' specific care requirements.
Zebra Danios thrive in well-oxygenated water with a temperature range of 65°F to 78°F (18°C to 25°C). Avoid temperatures above 82°F (28°C), as this can cause stress and shorten lifespan. Maintain pH between 6.0 and 7.5, with moderate water hardness around 5-10 dGH.
Provide plenty of swimming space — a minimum tank size of 20 gallons is recommended for a single adult fish. Schooling behavior improves in larger groups (at least 6 individuals), but be cautious not to overcrowd. Aim for 1 inch of fish per gallon, and include plenty of hiding places like plants or decorations.
Zebra Danios are omnivores that feed on small crustaceans and plankton in the wild. Offer a balanced diet with high-quality commercial pellets as the main staple (about 50% of daily intake). Supplement with live/frozen foods 2-3 times per week, such as brine shrimp, bloodworms, or daphnia — but always thaw frozen prey before feeding.
Feed 2-3 meals per day, only providing what can be consumed within a minute to prevent waste. Zebra Danios have small mouths and don't gulp food like some other fish; they graze continuously throughout the day. Avoid overfeeding, which can lead to digestive issues and poor water quality.
Zebra Danios are active swimmers that prefer gentle currents. Use low-wattage aquarium heaters (if needed) and avoid strong water circulation that could stress them. Regular partial water changes (about 10-20% every week) help maintain optimal water conditions and prevent disease buildup.
Handling Zebra Danios requires great care — they're sensitive to being netted or handled excessively. Avoid touching fish, as oils from human skin can cause irritation. If you must handle them, use a soft-mesh net and support the body gently to avoid damaging fins or scales.
Common health issues in Zebra Danios include fin nipping (often caused by inadequate hiding places), ich infections (visible white spots on the body), and bacterial diseases like septicemia. Monitor fish closely for signs of stress — rapid breathing, labored swimming, or changes in coloration — and seek professional veterinary care promptly if you suspect illness.