I kinda went overboard with the variations. There are sixteen of them, for crying out loud!
These are some fishies to mess around with. They're good in aquatic metarooms, and they stick together in groups of one color. There are a lot of variations! These eat the water mites, so don't make the maximum shcool size too large or there WILL be mass plant extinction, as there will be nothing to pollinate the aquatic flowers.
Unlike almost every other critter in existence, these will not wait around to be eaten alive, and will actively avoid creatures, beasts, and the Hand. The sprite at the bottom with no egg, and only one tail position, is the result of allowing a creature to hit one, as the fishies, like all my other critters, are Sabertooth-compatible. Aquatic Sabertooth Norns will be possible with these things.