What is this?
- Thread starter iamdon
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John Bolden
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Its a sponge I also have one on my hammer. Its harmless and nothing to worry about.I just saw this today under my hammer and live rock. Does anyone know what it is?
Ron Reefman
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Tampa Bay Reef Keepers
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Looks like a sponge to me.
No - nudibranchs only eat very, very specific sponges, and which specific sponges those are vary from one nudibranch species to another. So, you would have to happen to have the right kind of sponge and the right kind of nudibranch, and you would need to have a ton of those sponges to keep the nudibranch fed long term.
Berghia nudibranchs are the only nudibranchs typically kept in our aquariums because they eat "Aiptasia" ("pest anemones") which are generally plentifully abundant in our aquariums, so they're the only ones we can typically keep properly fed for a decent length of time.
John Bolden
Valuable Member
Also if it goes into a power head it will get shredded and spew coral killing poison all over your tank.
John Bolden
Valuable Member
Well the aptasia eating one.
You could try some sacoglossan slugs (often misleadingly called lettuce nudibranchs); Elysia spp. can be purchased from a number of places online, and - while not as large or striking as many nudibranchs - you can keep them (and even breed many of them) long term in properly prepared aquaria. They do still have specific needs though.dang guess I'll have one in the next life
Many nudibranchs are poisonous, but what they're actually dangerous to and how dangerous their poison is varies greatly.
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