i checked my tank today, and saw one of my yellow lab cichlids laying on diagonally, I dipped my net in to catch it, and it swam away, but then went back to laying down. I scooped it up, and put it in a small aquarium I use to transport fish which is about 2.5 gallons. Does anyone know what could have caused this and what i can do. It is upright now in the new tank, but it still isn't swimming around. It was fine yesterday. I don't have any more testing supplies, but all the rest of the fish seem to be fine. Its a 55 gallon with 14 medium Africans.