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Queer Things About Fishes

Queer Things About Fishes image
Parent Issue
Public Domain
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Mr. A. E. Verrill describes the ways in which fishes sleep. They are very light sleepers and frequently assurne singular positions. But the most reniarkable thing ia the ehange of color many of them undergo while asleep. Usually their spots and stripes become darker and more distinct when they fall asleep. Occasionally the pattern of their coloration is entirely changed. The ordinary porgy, for instance, presents in the daytime beautiful irridescent hues playÍDg over its silvery sides, bnt at night, m falling asleep, ít takes on a dnll bronze tint, and six conspicoous black bands make their appearance on its sides. If it is suddenly awakened by the turning up of the gas in the aquarium, it immediately resumes the silvery color that it shows by daylight. Mr. Verrill ascribes these changea to the principie of ' ' protective coloration, ' ' and points out that the appearance of black bands and the deepening of the spots gerve to conceal the fish from their enemies wheu lvine amid eelerass and weeds. -


Ann Arbor Argus
Old News