ID please

[ClownSchool]

I’ve had my tank running since June, and haven’t seen anything like this before. Anyone know what it could be?

 

[Porpoise Hork]

If you have aptasia move it to that and see if it eats it. If so winner winner chicken dinner you got a free berghia nudibranch.

 

[CryptoNautical]

IMO you need to get that out and watch for more if you have not added any knowingly. There are over 1,000 different species of nudibranchs out there and the likelihood of that one species being helpful is slim. Be safe than sorry.

 

[vetteguy53081]

Nice score. This will be a keeper unlike many that show up causing panic. Unfortunately, you will have to either find it an aptasia anemone to eat occasionally or sell it for an easy $25

 

[DeniseAndy]

Does look like a bergia, but I would be safe and remove until definite identification.