When Wilson dropped metal traps into a pond full of pumpkinseed fish, an event he says must have seemed to the fish as unsettling as a flying saucer landing on Earth, the bold fish couldn’t help but investigate—and rushed headlong into Wilson’s traps. The shy fish hovered judiciously at the edge of the pond, making it impossible for Wilson to catch them. On the other hand, after Wilson succeeded in trapping both types of fish with an elaborate netting system and carrying them back to his lab, the bold fish acclimated quickly to their new environment and started eating a full five days earlier
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