The nitrates were really high last night so that is why I moved him into a separate tank. So we had some cherry shrimp in his tank a couple of months back and everything was fine, until he noticed them, I saw him try to attack them a few times, but they were always faster then him. When I was looking into his tank today after I moved him, I unplugged the current and I noticed these weird little bugish things that I had thought were particles getting stirred up by the current, but they're still moving now even though I unplugged it. They look like they might be baby shrimp they are almost microscopic so it's really hard for me to tell. My boyfriend says they are like sea fleas, could they be the cause of this problem.