Do fish have sensory pits below their mouth? Because it almost looks like he has 4 small holes/indentations below his mouth, two on each side. But yeah, it looks like he has two holes for nostrils on each side, and then two more holes higher up on his head, but I think the ones higher up are sensory pits. But I read that flowerhorns were only supposed to have one nostril on each side of their head. I'm not sure, but it almost looks like his nostrils are becoming more prominent. Wouldn't he not be eating if it was Hexamita? He's eating fine.