I assume this is done through breeding and not something mechanical like tatooing? if that's the case, humans have been breeding animals to make them meet their needs for a very long time. We do it to get the colors we want, shapes we want, size we want, temperment we want, etc. This is really no different. BUT, as with all animals, this should be done with the wellbeing and health of the animal in mind. When it breeds in problems, that's not okay. As with dogs, we sometimes take it too far. we breed our pekinese and pugs with flat noses and then take it too far to where they have breathing problems. must make the nose flatter and wrinklier!!! oh now the dog can't even thermoregulate. too bad, it's cute.
okay a little sidetracked. BuT, if the fish has trouble swimming or eating because of the breeding we've done, I'd say we've taken it too far.
