From the Greek stenos - narrow and topos - place.

Stenotopic organisms are hydrobionts capable of living in places with insignificant variations in environmental factors, characterized by narrow localization and low ecological variability. For example, Aldrovanda (inhabits freshwater bodies).

Animals confined to a narrow range of habitats. Stenotopic organisms are usually stenobionts, but sometimes stenotopism is associated with eurybiontism in relation to a number of environmental factors.

Stenotopic organisms are contrasted with eurytopic organisms, which have a wide range of habitats.