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Spined Loach

Spined Loach Cobitis taenia

The Spined loach possesses the ability to utilise intestinal breathing. This is a stop-gap measure that sustains the spined loach when the water around it is oxygen-poor. At the water's surface it swallows air that brings oxygen into the intestine. Image: Sergey Yeliseev (Flickr).

Find out more: iNaturalist