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halgerda carlsoni - Google Search
When it gets hungry, it will pop out of the sand instantly when you put any meaty bit of food in the tank. Then it will bury itself again, of...
Yup, and the middle one is colored like a Gymnodoris (they eat other nudibranchs) but the angular structure on the dorsum makes me think it's...
Kinda odd, that's not one of the species that normally feeds on zoanthids. It looks like it has an external gill like a dorid, although the tiny...
A few thousand hours in the water, a few thousand dollars in books, a few thousand more hours reading the books (and any other resources I could...
It's a cool snail, and the first of this species that I've seen as a hitchhiker. It's a subadult Cypraea (Naria) poraria. It probably won't eat...
I like it when they pose :)
HMMM! I'd like to see a pic of him taken in a shallow dish of water, can't see too much detail on that pic. He is probably an algae eater. Can you...
Nope, it's either a cowry or an ovulid. I can almost see the pattern of the shell through the mantle. If it's a cowry, it's not going to be a...
Hey guys, The ones in the first pic look like tritoniid nudibranchs, which feed on soft corals. The one in the second pic is an ovulid snail....
On the bright side, nope, it's not a whelk, although it looks almost exactly like a Cantharus/Pollia/Gemophos species, as you suggested. It's...
Yep, it's an oyster (probably Crassotrea) growing on a cerith. Those type of oysters don't usually thrive in a tank, so it may not grow any more,...
There are a couple species that get up to two inches, pretty big for a Nassarius :) Nassarius (Zeuxis) olivaceus Cheers, Don
You tracked it down yourself, it's either Dendrodoris fumata or D. nigra. You're probably in a better position than I am to examine the gill...
Hi Guys, Yes, it's an oyster of some sort, but I can't really tell what kind. It lacks most of the clues for easily identifying them to the...
Your description sounds exactly like a barnacle, but the pic looks exactly like one of the keyhole limpets that occasionally feed on corals. If it...
Yup, it's a fissurellid, a member of the keyhole limpet family (not to be confused with a lot of other flat shells that are called limpets). It...
First one is Strombus (Conomurex) luhuanus. See the little notch where the eyestalk is extended? That's the "strombid notch," typical of all adult...
Yup, it's a Chama species, a kind of oyster. They're pretty common hitchhikers, harmless, and cool residents as far as I'm concerned! Cheers,...
Polyclad, as they all told ya. That particular (apparently still unnamed) flatworm is a snail/clam eater. Cheers, Don
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