What do color Variations really tell us? Why do wild fish look different? Does color vary according to which section of the stream they inhabit? OR for how long? I guess I want to know what exactly the different colorings of the fish are telling me.
Books or articles on this would be great too
Here are two rainbows from the same river. In this river rainbows are stocked as fingerlings in the upper section and adults in the lower (natural reproduction is very limited if it happens at all), who is who and how do you know? Both fish were caught right between these two sections.
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aside from the genetic diversities.