I've found out the young children like the creepy-crawly things more than the fish. Things like snails, crabs, crawfish, etc... Next seems to be odd looking / acting fish. Upside down catfish, Bango cats, Bristlenose and plecos, farawellas and glass fish (the ones you see the skeleton inside). Everyone loves Corys "their so Cute!"
They should also like Puffers and eels.
They should also like Puffers and eels.