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zebra fish
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Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
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zebra danio
zebra danio Zebra danio (Danio rerio).

zebra fish

fish group
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Study reveals how brainstem neurons control eye movements • Nov. 23, 2024, 6:16 AM ET (News-Medical)
Mapping the shifting gaze of ‘fishlets’ • Nov. 22, 2024, 4:09 AM ET (Popular Science)
China’s record-setting zebrafish tip the scales for human space habitation • Nov. 12, 2024, 4:42 AM ET (South China Morning Post)
Carbonic anhydrase inhibitors clear tau build-up in zebrafish models of tauopathies • Nov. 3, 2024, 9:51 PM ET (News-Medical)

zebra fish, any member of either of two unrelated groups of fishes, the freshwater species in the genus Danio (family Cyprinidae; order Cypriniformes) and the saltwater species in the genus Pterois (family Scorpaenidae; order Scorpaeniformes). The zebra danio (Danio rerio), a popular freshwater aquarium fish originally from Asia, is small (up to about 4 cm [1.5 inches] long) and has dark-blue and silvery longitudinal stripes.

Learn how Indo-Pacific lionfish species have become invasive in ecosystems around the globe
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Learn how Indo-Pacific lionfish species have become invasive in ecosystems around the globeLearn how venomous lionfish species rapidly spread their geographic ranges in the early 21st century, disrupting the balance of ecosystems in the process.
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zebra fishZebra danios (Danio rerio) are popular aquarium fishes.

The distinctive saltwater zebra fishes (Pterois), used in marine aquariums, have extremely large pectoral fins, numerous extremely poisonous spines, and colourful vertical stripes. Some species are more commonly known by the names lionfish and turkeyfish.

The Editors of Encyclopaedia Britannica This article was most recently revised and updated by John P. Rafferty.