Eyeless Mexican cavefish eliminate circadian rhythm to save energy

24 septiembre 2014

The Mexican tetra fish has two variants, a fully-eyed fish living close to the surface and a blind, deep water, cave-dwelling fish. Scientists in this study used these two fish to study evolutionary adaptation in fish residing in near or total darkness.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/mZClBDtaRiw/140924144937.htm

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