nice looking baby there aint sure of which type it is but i only keep the brighter colored African cichlids

my local pet shop had a parrot and some other kind cross breed very neat looking babies they made. point being once they got big enough to start fending for themselves he moved them to a tank of feeder fish cause they would easily stand out. that might of been what your supplier did or did it so the babies could get all they wanted to eat off the feeder fish.

i myself hate goldfish they are very nasty fish and used as a feeder is a very job job for them. but watch out if they get in a local creak or pond. i know of 2 instances where they got introduced to 1 a pond and 2 a creak. and they took over the pond when it rains or you throw a bucket of pond feed fish food the top the pond turns gold from all the gold fish. the owner of the pond has poisoned them blew his damn a couple of time second time he had it dug deeper but still the gold fish returned once the pond was refilled. the creak they stay kind of contained due to spots drying out here and there in the summer but still there is sections choked full of gold fish that you can literally reach in and grab them or use a net and get them by the dozens