zebrafish

[zee-bruh-fish, zeb-ruh-]

noun

plural

zebrafishes ,

plural

zebrafish .

1. a small, slender freshwater fish, Brachydanio rerio, having luminous bluish-black and silvery-gold horizontal stripes: popular in home aquariums.

Word History and Origins

Origin of zebrafish¹

First recorded in 1765–75; zebra + fish

Example Sentences

This group spans more than 10,000 species, from catfish to aquarium favorites such as tetras and zebrafish.

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Fully refined, sensitive hearing evolved after two separate lineages colonized fresh water: one that led to catfish, knife fish, and African and South American tetras, and another that produced carp, suckers, minnows, and zebrafish, the largest order of freshwater fish.

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Zebrafish, for instance, can detect sounds up to 15,000 Hz, approaching the 20,000 Hz upper limit in humans.

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The model suggests that, even 67 million years ago, otophysan fish had nearly as sensitive hearing as zebrafish do today.

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"The Weberian apparatus has just a little bit lower output power, which means lower sensitivity, compared to a zebrafish. But the peak, the most sensitive frequency, is not too much lower than zebrafish -- between 500 and 1,000 Hertz -- which is not too bad at all and which means the higher frequency hearing should have been achieved in this old otophysan fish."

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