Anti Crustacean Parasite will eradicate anchor worm, fish lice, gill maggots and fish leeches. If left untreated these parasites will cause life threatening damage so should be eradicated quickly.

Diagnosing Crustacean Parasites -

Fish with parasites will show the following symptoms

Flicking and rubbing against objects

Rapid gill movement

Red, irritated areas of skin

Only use Anti Crustacean Parasite if your fish have visible or worm like parasites attached to the skin or fins. Also if they have maggot-like parasites visible on the gills.