I have an 8 to 10 inch pleco that I rescued from a lady about 2 weeks ago. I say rescued because this pleco was living in a 10 gallon tank with 5 guppies in it. Anyway I brought him home and put him in my 55 gallon African cichlid tank. this morning when I turned the lights on I noticed that he was upside down lying at the surface of the water. I bent over to take a look at him and as soon as he saw me he "came back to life" and splashed at the surface and went back to hanging on the side of the tank. has anyone else ever seen this type of behavior? is this something I need to be concerned about?