From Creatures Wiki
Angel Fish (Gillium gillium)fish in the Marine Terrarium. It spends most of its life swimming about in search of food (mostly seeds). If it is not eaten by natural predators or a hungry Bondi Norn before living out its natural life span, it lays a number of light blue eggs.
The angel fish also happens to be a real terran fish.
- Angel Fish (Creatures 2), a similarly-named Creatures 2 COB.