Last Tuesday (11th) I added a peppered cory to my 29 gal tank. The otos were added the same day as the cory (actually added 3 otos but one died on Sunday). He seemed fine until Saturday and we noticed that he was floating head and belly up near the top. The serpaes had harassed him some to start with but not much, mainly nipping his tail. There isn't any visible sign that they harmed him I isolated him in a small container and he made it through the weekend. I bought 3 new corys yesterday and put all 4 back in my main tank. They went off and started eating while he went off by himself. He still is having problems staying on the bottom and seems to float up or over on his side. I tried giving him a mashed pea (3 actually) but the other fish get them before they get to the bottom of the tank to him. He does make quick runs to the top of the tank which I understand is normal. Thanks in advance for any suggestions.
