I think my Hippo is special needs. They nailed the personality of my fish in Finding Nemo. This fish will go in a cave, under a rock and brush all the sand away to where the glass is bare. Then, proceed to attack its reflection to point of kinda beating itself up with the rocks above. I push the sand back to cover the glass and the fish will be normal for awhile, then go right back and do the same thing. Anyone else have a "Special Hippo"? Anyone see this with another type of tang?