So recently I was looking for a fish that usually spends a good deal of his time hideing in,the rear of my tank an area hard to see I couldn't find him but then I did... The fish some how made it into the the overflow chamber in the center of my tank. He seems happy in,there but I don't think he will last long if I don't get him out, I have no idea how he got in except for swimming in over the edge and I have no idea how to get him out any suggestions