Hatcheries Fish: Dumb and Dumber

Yep, turns out that hatchery fish aren’t as smart as those raised in the wild. “While small stones at the bottom of a fish’s tank usually serve aesthetic purposes, they may actually help to increase growth of specific parts of a steelhead trout’s brain, according to UC Davis researchers.” Amber Hsiao in The Daily Californian.
But wait, what about standardized testing?