Stock Fish Dumber Than Wild Fish

Ever get the feeling it is easier to catch stocked trout? They must be dumber right?Its true. In a recent study it was shown that trout bred in captivity had smaller brains than trout born in the wild.

New finding have show that making the environments in the hatcheries more natural like can increase the brain size of the stock trout. The findings could affect the design of hatcheries for breeding fish better suited to restock wild populations, the researchers say. The results were detailed last month the journal Experimental Biology.