Whats this thingy

[ducati2242]

I havent seen this myself my wife rang me this morning and asked if I hah seen what was stuck to the glass. I got her to take a photo for me but cameras are not her best avtivity so picture is a little fuzzy. Corse when I get home theres no sign . Ive had my tank running for nearly 4 months now , salty , and it dosent seem to have done any harm . what is it.

 

[melosu58]

Looks like some type of nudiebranch. It`s hard to tell from the underside.

 

[ducati2242]

Its obviously been in my tank for at least three months as that was the last time I put any rock in . So is it right that I just leave it alone or like the mantis I found do I exile it . next time its out and about that is.

 

[austinsdad]

My vote is to leave it alone. I agree it looks like a nudibranch. Doing well too if it hasn't starved and died in 3 months.