Water Hog-louse - Asellus aquaticus


This crustacean is closely related to woodlice but lives entirely in water.

Photo ID?

Often found in stagnant water as they can tolerate low oxygen levels. They do not swim well but tend to crawl around weed and mud.

When to see it

All year round.

Life History

They are detritus feeders, eating decaying organic matter. The species breeds throughout the vegetation period, most frequently in spring. Females carry eggs in brood pouches underneath their body.

UK Status

It is common and widespread in Britain.

VC55 Status

Common in Leicestershire and Rutland.

Leicestershire & Rutland Map

UK Map