Choose one of the following:
Gill worms, Dactylogyrus, monogenetic flukes
+3
- rapid breathing
- splayed gill covers
- apathy
- loss of color
Gill rot (Branchiomyces)
+3
- the fish become lethargic
- the fish seem to suffocate and desperately try to swallow the air from the water surface
- the gills look faded, having alternating areas with necrosis and with healthy tissues
- the skin color becomes bluish due to hypoxia
Swelling and inflammation of the gills
- swelling and inflammation of the gills