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Nope. It's true that the toxin is called holothurin because it was first found in holothuroids but it's not present in all sea cucumbers and when it...
Just to confirm, that's an Eurythoe species and a scavenger/detritivore.
For future reference, keep in mind that not all cucumbers are toxic and only a few of them expel internal organs. I don't think that the one Sheila...
Hi Sheila -- got your PM. The picture doesn't really show the features we need to see but I think it's a baby sea cucumber which means it's harmless.
We swing both ways. ;D Disclaimer -- I know polychaete worms but I'm not really an invert expert, just an invert fanatic with a lot of ID books &...
In the sense that it's colorful with a smooth shell & fleshy margin, yes. :) I don't think there are any tropical Tonicella. They're all cold...
Why Gresh, I thought you didn't defer to me on anything! :D I meant any chiton that shows up in a reef tank will be reef safe in the sense that they...
It is a chiton which is reef safe, no need to worry. There are hundreds of tropical species.
Did your LFS say what kind of nudibranch they were going to order? That's the first I've heard of this sort of thing and I'm really curious to know...
You can also try frozen clams. Good luck!
Hi Sheila -- Got your message, thought I would reply here as well. One of the problems with these mollusc-eating flatworms is that they seem to be...
I don't know how big it will get. I'm also guessing it's from Florida/Caribbean as a couple of UW photographers from the region have sent me photos...
Hi there - got your message. It is indeed a species of Eunice and should have 5 head appendages but occasionally they lose some to predators or a...
I said snail, not nerites. Here are some types of egg cases -- Knobbed Whelk (Busycon carica): Axis for Trading Beads Crown Conch (Melongena corona)...
What kind of snails do you have in the tank? Those look like whelk eggs. Several groups of gastropods produce these big stacked egg cases.
Sponge.
As usual, there are a lot of different species that could be identified as Aiptasia by reefers so distribution doesn't mean much here. It could also...
Don't blame the worms or starvation. Polychaetes & most marine inverts can go for long periods of time without eating. I'm guessing that water...
Fish, crabs, other worms, sand sifter stars, some urchins, some molluscs, & a whole lot of other creatures eat worms. Considering how many you have...
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