Creek chubs in a pond with a solid predator base are fine. They don't reproduce so they'll just become a nice snack. They will never be a quality forage item, however, since they do not reproduce in still water. Travis has noted that they are not to be used in ponds that do not have an apex predator like largemouth since they are very gluttonous fish with a fairly large mouth for their size. They will directly compete with panfish and others.