i have some dwarf cuddles in my tanks, i think there is only one per tank. they live on live food, mini shrimp and such. its really cool to see them search through the sand for food, make little blinds for hunting, and cruzing about, sometimes changing colors like crazy. if they get scared the little ink cloud is neat too. all around a great addition, better then a octopus, since he wont escape, but i think i could have done much better with them if i knew what was coming. the egg clutch was kind of dumped on me last minute. plus now the one in my sump is getting kind of big (+2") and i fear whats going to happen to the little clowns in there
but i haven't seen the guy in the sump in a while and the shrimp count in my sump is up so hopefully hes full already
as for hatching them for me, it was easy. i hatched them at home and at the LFS i worked at, so the eggs are very hardy. my only suggestion is have lots of good foods, preferably live on hand for the hatch, and hatch them in something easy to catch them in afterward, they are incredibly hard to catch in even small tank with nothing in it.