If you've ever caught a wild rainbow trout - truly wild, like those in
the Delaware or the Madison River - you know that it doesn't need any
help from creatine. A hatchery trout is a different creature entirely -
a wan spirit reared in concrete tanks, fed trout pellets, and dumped
into a foreign world on opening day. Creatine might make a difference to
these fish and the anglers who catch them, but it's the wrong
difference, especially since the F.D.A. hasn't approved creatine as a
food additive. Anglers don't need creatine-enhanced hatchery trout. What
we need are more wild trout in more wild rivers.

Hatchery trout, as endorsed by Barry Bonds, the official food of
professional baseball.
Frank Reid