The millimeters-long, translucent zebrafish may not get depressed exactly like humans do, but the fish do exhibit a "giving up" behavior: they stop swimming after they realize they aren't getting ...

Researchers uncovered how zebrafish detect colors using photoreceptor cells in the pineal gland ... Many non-mammalian vertebrates like fish, however, are known to detect color and brightness with the ...

including exactly how it affects the brain's cells and circuits. To help answer these questions, researchers are turning to an unlikely animal: tiny, days-old zebrafish. The millimeters-long ...