My tank has only been up for 1 1/2 months. I have Trochus, Margarita and Cerith snails. I also have one lawn mower blenny and I just added two tank raised False Clown babies on Saturday. I noticed an odd critter yesterday and didn't think anything of it because I have a multitude of Copepods crawling on the glass and thought it was just a new lifeform that was thriving. This afternoon I found several of my cerith snails piled in the corner and three of these things on top of one. I started noticing that several of the Ceriths have stripped looking areas on their shells. I was trying to find out what the nasty little bugger is and ran across info and pictures that led me to believe it might be a nasty isopod (parasite) trying to feed on my Ceriths. My daughter and I since that time have found pictures that led us to believe that it might be a Marine Pill Bug rather than one of the type that are parasitic to fish. I would feel a lot better if I knew for sure. I am worried about the few fish that I have and will make arrangements to quarantine tomorrow if it is necessary. This is the clearest picture that I could get. I hope someone can help me identify this. Thank you so much.
