Lepidurus arcticus
Arctic tadpole shrimp Lepidurus arcticus is a species of tadpole shrimp which inhabits ephemeral pools, ponds or permanent freshwater lakes of Finland, Norway, Sweden, Svalbard, Greenland, Iceland, Russia and the Kuril Islands. Unlike other species of tadpole shrimp, "Lepidurus arcticus" is known to coexist with fish, such as Arctic char, brown trout and European whitefish. Furthermore, they exist in water temperatures much colder () than the other species of its order. It is a common predator of "Daphnia pulex".