maybe not have them as a closed species if they aren't being bought? like have them semi-open so only you can make adopts but others can still make their own. and eventually If you want you could make it closed when they are more popular?
well there's probably some like it out there (other than the one we saw already) so maybe add some more non-pony like traits? just to make the species more unique than just a jelly pone
okay ^^ but like you could still add some fishy traits (I donna what you have exactly at the moment) but stuff like gills and flippers on the jaw like sea pones have?