i have a small tank 30 Litres, and its been populated by 4 oragange lilupi and 2 ocellatus. I recently moved the tank as i had to move house , and i replaced all the water back and the fish were only out of the tank in a bucket for 30 mins or so. 2 weeks laters and a small lilupi has it seems to have caught something. The tail of this fish looks completely white and eaten, the fish also started behaving quite bizaarly. First it sits ontop of the water filter which is almost out of the water. Secondly now it is hiding in a shell and refuses to come out. One ocellatus is also rather agressive and tends to attack him regular now, maybe because he is sitting in his shell ! I have raised the temp to 30degrees, and i have added some marine salt. Thininking it might be white spot related. However all the other fish are ok, and there is no sign of white spots, just a white patch on the anal fin, and the tail of the body. Any idea of what this might be ?