Captive fish donâEURt have all their marbles. But adding a few stones to the tank is all thatâEURs needed to grow their brains.
A newly hatched trout with yolk sac. Credit: Rebecca Kihslinger/UC Davis
Trout bred in captivity have smaller brains ...
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A newly hatched trout with yolk sac. Credit: Rebecca Kihslinger/UC Davis
Trout bred in captivity have smaller brains ...
More Information