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That'll be a Stomatella. Long antennae and fast crawling along with the flattened shell on the dorsum are good clues. They're good algae eaters....
The Sea Slug Forum - Hypselodoris picta
Good job on tracking down the hipponicid without my help, lol. I've been incapacitated for a few days by a pinched nerve but I can at least sit at...
Yes, the first one is a Keyhole Limpet, which is a bit different from the true limpets (entirely different family). The Diodora species are grazers,...
Right, you probably didn't kill it, since you can find them on the reef that have big chunks out of them or healed splits, and they still seem to be...
Glad to help, Will. A 120 should handle quite a few small trochids without them getting in each others' way, I reckon. It could surely handle 15 or...
It's either a trochid or a chilodontid (all of which were considered to be in the family Trochidae until recently). I think it's a Diloma species....
It should be a nudibranch in the superfamily/suborder Aeolidina. I can't see enough of the details to try to make a specific guess, but the bright...
I like it. I'd let it live, at least until I knew what it ate. Chances are it feeds on some cnidarian, but not necessarily anything that you...
The snail is or was Mastonia rubra, a cryptic little sponge-eating triphorid. It may be housing a tiny hermit now, though. Either one won't be a...
Sure, it's an algae eater and won't hurt anything, whether it's a Haminoea or the closely-related Smaragdinella. You might try getting some good...
Nah, they're fully adult at that size. Some species in the same subfamily grow a little larger, but most of them only reach 5 to 7mm. Cheers,...
Confirmed on both accounts!
Yup, that would be a snail-eating Polyclad Flatworm. You probably don't want it running loose in your tank. Cheers, Don
My pleasure. I've killed so many snails, it's nice to maybe save one or two occasionally, LOL. Most of the opisthobranchs have fairly short life...
Man, I skip a few hours checking in here and you guys are ready to condemn an innocent opisthobranch to death! It's a strictly-vegetarian haminoeoid...
Right, it's not a Turbo, it's a Keyhole Limpet, probably a Diodora species. It shouldn't cause any problems. Cheers, Don
I'm partial to deadly Cone Snails, but I'm possibly prejudiced. The deadliest ones are the easiest to keep (Conus geographus and Conus striatus) but...
Some snails are more suited to brackish water, of course, and some live only in brackish water. There are several species of potamidids and...
Fly puppies.
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