Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
No qt , it looks like a ulceration , no aggresion , one question in case there's a bacterial problem can this fish contagious the others ???Hard to say for sure.
Have you seen any aggresion? We're the fish properly QTd?
It is likely one of three things from what I can see. Aggression damage, injury from a rock or coral, or the start of a bacterial infection.

