Something has bred in my tank .... Turned lights off and discovered a small mollusc climbing up the glass. About 5-7mm in size. I have turbo snails, one conch who has been lonesome for 3-4 months and also recent addition of a sea hare. I'm guessing either sea hare was pregnant when I got it (?) or turbos have bred but it doesn't appear to have shell. When do they develop shells? Tried to take photo but pretty crap.
Also I bought a new coral a few weeks ago so maybe a totally new inhabitant?
Any suggestions ? Ta!!