Hybrid Murray Cod / Trout Cod on Surface. Concerning feature.

Описание: Caught this Murray Cod / Trout Cod Hybrid recently. Also, noticed the fish in this part of the system consistently are presenting with mouth ulcers... Reason for concern? Looked up some reliable sources and it may just be these fish are stressed and prone to infection. Any thoughts out there on this one? Might send it to fisheries. #fishing #australiafishing #murraycod #infection