Goldfish Fish Lice

Fish lice are an external goldfish parasite large enough to be seen with the naked eye. They are an eight-legged crustacean, greenish in colour, and they use their legs to swim until they get a hold on a goldfish.

Apart from being visible, the goldfish will display classis external parasite infection behaviour such as rubbing against obects in the tank or pond.

Fish lice can be removed from the goldfish with tweezers, or medication can be obtained from a pet shop.