'Just Me and the Fish'
- Apr 5, 2011
Well, I'm no expert but hatchery fish are different colours to wild fish because of the environment in which they are born. If they are stocked in to a commercial fishery then the environment doesn't alter very much throughout the year except water temperature. Acidic and Alkaline water contains different native aquatic insect species and so their diet depends on the availability of certain foods but I don't think that the PH value makes a huge difference to their colouring. Even wild Barbel change colour slightly from season to season throughout the year, more so during spawning season. Hatchery Brown Trout change colour after being in a river for a period of time to blend in with their environment. Wild brownies also change colour from birth to suit their environment.