How big do zebra danios get? They’re usually sold as juveniles from about 0.5 to 1 inch in length, and a mature zebra danio’s size usually tops out at around 1.5 to 2-inches. They share about 70% of their genetic material with humans, so they’re ideal for studying diseases like diabetes and muscular dystrophy, and for use in developing new drugs and treatments.Their easy breeding habits and large, transparent eggs make them ideal for laboratory experiments.Their DNA was fully sequenced in 2001 and continues to be studied in more than 600 labs around the world.This extensive research has led to zebrafish being one of the best-understood species on the planet: Initially dismissed as a fish with no economic worth, they’ve since become a model species for scientists studying everything from genetics of neural development to cancer, and have even been sent into space! The zebrafish was first described in India in 1822 by the Scottish physician and explorer Francis Hamilton. Other popular aquarium varieties include the Pearl Danio ( Danio albolineatus), Celestial Zebra Danio ( Danio margaritatus), and Emerald Dwarf Rasbora ( Danio erythromicron). Zebrafish, as they are also called, are just one of the 23 species of danio currently recognized. “Danio” derives from the Bangla name Dhani, which means “of the rice fields”. They usually are found in shallow water shaded by aquatic or overhanging vegetation with a sandy or silty pebbled-filled substrate.Wild populations exist in slow and fast-moving streams, rivers, lakes and even nearly stagnant irrigation ditches and rice paddies.Tolerant of a wide range of habitats and water conditions.They will also consume small crustaceans and worms if their preferred foods are unavailable.Omnivorous and feed primarily on zooplankton, phytoplankton (including algae), small insects and larvae.Members of the large Cyprinidae or minnow family.Found originally in various parts of India, Pakistan, Bangladesh, Nepal and Bhutan, the striped danio has also been released into the wild (both deliberately and by accident) in Columbia, Malaysia and parts of the United States. Zebra danios are small freshwater fish native to South Asia. Omnivore In the wild, they eat small insects and eggs, algae, crustaceans and wormsĪctive, curious, schoals in larger groups (15+) Up to 2 inches in length average size is 1.5 inches at maturity Let’s talk about why these social fish are such a popular option for freshwater tanks. I’d hazard a guess that there are few aquarium stores in the United States that don’t have at least one type of zebrafish for sale. The striped Zebra Danio ( Danio rerio) is a mainstay in the aquarium trade and has been so for many decades.
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