arowana cure

Hi, I have just bought a silver albino arowana online and there seems to be some sort of wound on the right side of his body. Behaviour seems normal and I haven't seen any white strings or any other weird stuff. Thinking it was a wound it got from other arowanas (it was previously kept with...

My RTG arowana is not eating anything and is banging against glass walls please help

Is there any sign of dropsy?