strange blemishes on Niger trigger

[BilboB]

Neobenedenia flukes are large, like 5 mm long. I can easily see them.

 

[christinna77]

Neobenedenia flukes are large, like 5 mm long. I can easily see them.

These tilefish had a heavy fluke infection. This picture was taken one day before the fish in the back started breathing heavily and stopped feeding. I performed a FW dip afterward and 20+ flukes came off. The flukes are often completely invisible.