Strange question....can fish get constipated/blocked? My baby hippo tang wouldn't eat this morning. Since I got him, he has been a great eater. I've been feeding him twice a day with mysis shrimp, he has green algae clipped in the tank (I don't think he's eating that a whole lot) and he constantly has been eating pods off the glass. He has no white spots or anything "odd" on his body and he's swimming fine and very active.The only thing I've noticed is that just behind his fins he looks a little bloated. Any suggestions?