On average, each zebra danio needs 2 gallons (8 l) of tank space. Tank Setup School of long-finned and regular Danio rerio This should encourage you to keep a healthy school at all times. ![]() Their regular swimming reassures nervous fish – such as Jack Dempseys – that everything’s okay. When your zebrafish stay happy and active, they act as dither fish within your tank. This pecking order keeps the structure in place and curbs unwanted behaviors. If you go lower, your zebras may develop behavioral problems, such as fin-nipping.Ī balanced shoal allows a natural hierarchy to mature. Stressed fish tend to fall ill more frequently and faster than calm fish, so skip lone zebrafish.Ī minimum school size of five works best. If kept alone, they’ll become stressed and opt to hide out in the tank décor. Zebra danios MUST stay in a school if you want to keep them healthy. If you stay on top of your water changes, provide high-quality food sources, and maintain a healthy school, you might eke out 5.5 years. LifespanĪs you might expect for freshwater fish on the smaller side, zebrafish only survive for an average of 4 years. The added space gives them room to stretch their fins. You CAN keep them in outdoor ponds, and they’ll grow even longer. When kept in aquariums, zebra danios reach an adult length of 2 inches or 5 cm. Good thing they’re so easy to breed in captivity, though captive-bred zebras aren’t as sturdy as their wild counterparts. This has led to even narrower ranges than after the reclassification of the two species. Unhappily, wild zebrafish have suffered habitat loss. So long as there’s a dark, silty bottom, plenty of plant life on the verge, and a few rocks, they’re happy. They’ll gravitate anywhere from rice paddies to oxbows to floodplains. Zebras prefer slower waters, but the preference ends there. Zebra danios, or zebrafish, inhabit tropical and subtropical Bangladesh, Bhutan, and India.Ī similar species once had its range extend to Myanmar and Pakistan, but reclassification narrowed that range. ![]() So if you want a more exotic look for your tank, you can mix stripes and spots. Once considered a separate species, new research has found these little fish with sprinklings of dark spots are a variation of zebra danio. Less common options include albinos, a golden background, veil-tails, fantails, and long-finned zebra danios.Įven more popular are leopard danios. You can choose from the typical silver background or other available varieties. Their distinctive horizontal stripes stand out against plants and other colorful freshwater fish.Īnd with a hardy nature, they’re the perfect fish for every level of the aquarist. Zebra danios (Danio rerio) make for popular tank additions from the Cyprinidae family.
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