I recently acquired some new fish to go with my small Goldfish, namely shebumkins, grass carp and some fish I don't know the breed, along with a couple of larger Common Carp, around 3 and 5lb. These are much bigger than anything else in the pond, but in the 4 days I have had them, I have noticed that the larger one isn't eating... Ive got pond pellets and koi sticks, which all the other fish are gulping up like mad, but everytime the larger Common Carp tries some, it just spits them out. I even tried a little bread. It generally seems a bit unhappy, although it is being followed by all its new little buddies. Anything I should looking for or is this just a change of diet and environment?