The trematodes are located in the stomach and the upper digestive tract. The microsporidian parasites form white cysts in the kidney s. The flukes were concentrated within the gallbladder. Overall, none of the hosts seemed to be seriously affected by the parasites. The Arctic Char s circumpolar range occurs in deep runs and pools of medium to large rivers and lakes.
Andromonous populations enter the rivers to spawn in the fall and winter.
Arctic char are considered carnivorous just like the brook trout. They will eat almost anything, from insects to algae to sculpin. In arctic waters, spawning occurs in autumn over gravel or rocky shoals in lakes or quiet pools in rivers at depths of 3-15 feet. The eggs will over winter and start to hatch around April 1st. The Arctic char seem not to suffer from any serious predation, except cannibalism and parasitism occurs by roundworms and tapeworms.