
1) Fish
Found on
https://www.crosswordclues.com/clue/zebrafish

The zebrafish (Danio rerio) is a tropical freshwater fish belonging to the minnow family (Cyprinidae) of the order Cypriniformes. Native to the Himalayan region, it is a popular aquarium fish, frequently sold under the trade name zebra danio. The zebrafish is also an important vertebrate model organism in scientific research. It is particularly no...
Found on
http://en.wikipedia.org/wiki/Zebrafish

<cell biology, genetics> Brachydanio rerio, species of small fresshwater aquarium fish with a transparent embryo making it possible to follow progeny of single cells until quite late stages of development. This, together with the availability of mutant lines make it an important preparation for the study of vertebrate cell lineage and develop...
Found on
http://www.encyclo.co.uk/local/20973

(= Brachydanio rerio) Freshwater fish, easily reared in an aquarium. Its transparent embryo makes it possible to follow progeny of single cells until quite late stages of development. This, together with the availability of mutant lines, makes it an important preparation for the study of vertebrate cell lineage.
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http://www.encyclo.co.uk/visitor-contributions.php

a small, slender freshwater fish, Brachydanio rerio, having luminous bluish-black and silvery-gold horizontal stripes: popular in home aquariums.
Found on
https://www.infoplease.com/dictionary/zebrafish
No exact match found.