---
title: "Water Hoglouse"
description: "Asellus aquaticus — Other animals. Asellus aquaticus is a freshwater isopod crustacean, resembling and related to woodlice."
canonical: https://animalchecklist.com/animal/water-hoglouse
last_updated: 2026-09-20
---

# Water Hoglouse

> Asellus aquaticus — Other animals. Asellus aquaticus is a freshwater isopod crustacean, resembling and related to woodlice.

- Scientific name: *Asellus aquaticus*
- Category: `other` (Other animals)
- Habitats: `freshwater` (Lakes & rivers)
- iNaturalist observations: 3513
- Wikidata: [Q586336](https://www.wikidata.org/wiki/Q586336)
- iNaturalist taxon: [434576](https://www.inaturalist.org/taxa/434576)

## Names

- en: Water Hoglouse
- de: Wasserassel
- fr: Aselle
- nl: Zoetwaterpissebed
- pl: Ośliczka wodna

## Countries with the most observations

GB (868), FR (164), DK (123), DE (112), PL (108), CZ (57), AT (53), RU (53), FI (52), NL (37), SE (19), UA (16)

## Summary

Asellus aquaticus is a freshwater isopod crustacean, resembling and related to woodlice. It is known by various common names including pond slater, water louse, aquatic sowbug, water hoglouse and cress bug.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Asellus_aquaticus

## Photo

![Water Hoglouse](https://animalchecklist.com/img/animals/water-hoglouse/medium.jpg)

Photo: alessandra sana · CC0 · inaturalist — https://www.inaturalist.org/observations/245952239

## Machine access

`GET https://animalchecklist.com/api/v1/animals/water-hoglouse?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).