Here is my uaru, i was taking a few pictures of him when he decided to yawn. I never ger a good yawn, so of course this pic was blurry. But check out the teeth!
the first pic is right befor the yawn. when he did yawn i panicked and pressed the button with out focusing first.
The "spot" is actually on both sides of the gill plate. It has a sort of shine to it, so im guessing it may be some sort of marking, im just not sure what it means. He's had it for a while. He is the dominant uaru in the tank, so maybe it has somthing to do with that.
Heres a pic of the other side. he's in mint condition and excellent health.