One of my Gourami's appears to have a swollen gill. It is the part underneath and slightly below were the gill opens. Along the lower part of the opening, I can see the inner pink part of the gill and obvious swelling in this area compared to the other side. He has also been hanging at the bottom of the tank today - he typically tends to like mid to near surface areas. Occationally, I have seen the ropefish making possibly aggressive posturing with this fish. Could it be an injury or is it more likely something else? And how should it be treated?
:sick:
:sick: