Argulus sp. (Muller, 1785)
Argulus sp. is well known as “Fish louse”. Argulus sp. is an ectoparasite mostly found on body surface and fins of fish. Body of Argulus spp. is divided into three regions: cephalothorax, thorax and abdomen. Length 3.00 — 5.12 mm. Body dorso-ventrally flattened. Two sucker to attach with fish. One pair of compound eye present that can be moved. Both reproductive and breathing organs are situated in the tail. Mouth is situated behind the probosis. Female is larger than male. The disease caused by Argulus sp. called argulosis.
Symptoms and pathology.
- Excessive movement.
- Instance irritation, scraps or rub against solid objects.
- Reddening of the skin.
- Fish will weak, lethargic.
- Injury caused in attacked place.
- Injured area possible secondary infection by bacteria, fungus etc.