What Are the Signs of ICK?

Ick, is a common disease caused by a parasite called Ichthyophthirius multifiliis that affects freshwater and marine aquarium fish. The disease is extremely contagious and deadly, so it is essential to detect and treat early and correctly. Preventive care should be practiced to reduce contamination. The suggested treatment for ick requires treatment for the entire tank.

  1. Causes

    • Ichthyophthirius, better known as "Ick", is often present in freshwater and aquarium fish. The presence of the parasite in combination with stress weakens the immune system needed to fight off the disease. Stress can be caused by improper diet, water temperature and quality.

    White Spots

    • Ick is often called "white spot disease" due to the tiny white spots that are present on the infected fish's body and gills. At times the ick will be only noticeable on the gills. The spots are round in shape, approximately the size of a grain of salt and visable with the naked eye.

    Fish Behavior

    • An infected fish may hold its fins closer to the body than usual. When the gills are affected, the fish will gasp for air. As the disease progresses, the fish will rub against the sides and bottom of the tank in an attempt to dislodge the parasite. Untreated ick may cause respiratory distress, loss of appetite and eventually death of the fish.

    Treatment

    • When ick is present, the hobbyist must treat the entire tank with commercial ick treatments. The manufacturer's application instructions, dosages and warnings should be followed. The tank's water temperature should be maintained at 78 to 80 degrees Fahrenheit, carbon should be removed from the filter, and UV sterilizers or protein skimmers should be shut off.