"cecil, out here in norcal reservoirs, i've noticed how if stocked hatchery fish raised on pellets (white meat) can survive at least a year in the reservoirs w/out getting caught, their meat eventually starts to turn pink, however i think some species are more pre-disposed to having pink or red meat."
I've seen that too in the trout I used to catch out east and here in Indiana. Again it's the carotene they are getting in their natural diet vs. the pellets they were fed at the hatchery. Zooplankton and other crustaceans are rich in carotene.
