surfy said:I wouldn't reccomend a nudibranch or sea slug since they usually have very short life spans, a year at most.
Crevalle said:I forget who said that nudibranchs eat algae, but they are actually carnivores--I've never heard of a nudibranch that ate algae. Heck, if they ate algae, they'd be easy to keep. They are in fact, awesome hunters. So diverse in prey, too.