Black Spot is one of the more frequent parasites observed by fishermen. It is caused by larval flukes encysting under the skin or in the flesh. An infected fish is edible. Clean and prepare as usual. Eye opaque or deformed.
Eye flukes live in the fluid of the eye.
Although they cannot be seen by the fishermen, they eventually cause blindness in the fish. An infected fish is edible. Clean and prepare as usual. Gills swollen and pink. There are a number of gill parasites infecting fish.