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2016 - 2017



Very Rare Type

not a coral eating Nudibranch !!!

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Nudibranches rarely live more than a year in the wild. In fact of the 3,000 known species; many have a life cycle of one month or less...  Many are highly toxic and will put any tank at risk when they die... Some are indestructible parasites of Hard and Soft Corals...


Of course they are stunningly beautiful which pushes many uninformed Aquarists into getting some...


Every Old Timer knows this anecdote about the infamous 90 gallon tank that was on display at a major retail store back in the 60's: It housed a Spanish Dancer... Every specimen of Fish, Coral, Invertebrate they tried to introduce in the tank soon died... After a while they realized the Spanish Dancer was killing anything and everything so they decided to get rid of it and rely on non toxic specimens to repopulate the tank... Even after performing countless water changes and even completely washing the tank with Javel etc... Everything fell to the curse of the Doom Tank... The thing is that the Poison released by Spanish Dancer can adhere to surfaces for months (rocks, algae, plastic, glass...).


So there is no point really in trying or wanting to keep most Nudibranches in captivity  :)


However there is hope... Not all Nudibranches are - Carnivorous Eating Machines -

Sea Hares are mostly vegetarian but keep in mind that they are the largest of them all and that on their demise: toxins will be released...

There are also much smaller species that feed on algae...  perhaps even detritus, bacteria and Bryozoans...

It is extremely difficult to get detailed data on them. Those are the ones that you might find at SBMarine: and we will do our best to relay whatever useful observations that we can.


At first the specimens found in the EOS and AEGIS tanks looked like Berthellina citrina which grow to 3cm... Then we looked up Vayssierea felis which grow to 3mm... But these Genus are found in waters around 20/23 degrees...

We then looked up the  Siphopteron genus; in the 26 degrees Celsius range and found a possible match with a yet still unidentified sp. It grows to 3mm !!

the EOS tank

the AEGIS tank