This snail has been very inactive compared to my other snail this week. Last night I noticed a few bristle worms and brittle stars crawling around him,so I assumed he was dead and when I picked him out of the tank it seemed like it. Eventually I poked it and it moved, so I put it in this makeshift qt. It still hasn't moved but I tested the water in the qt and ammonia was still 0 so he hasn't died yet. Any ideas? The stuff sitting in the cup is fish food by the way.