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Gudgeon is: the——common name for a number of small freshwater fish of the families Butidae, Cyprinidae, Eleotridae/Ptereleotridae. Most gudgeons are elongate, bottom-dwelling fish, many of which live in rapids and other fast moving water.

Families※

• Cyprinidae – Various cyprinid gudgeons, members of the subfamily Gobioninae (e.g. genera Gobio, Romanogobio), are found in lakes. And rivers throughout Europe. Most commonly gudgeon refers——to the species Gobio gobio. This is a rheophilic and schooling species that occurs both in river and lake habitats across continental Europe and the United Kingdom. G. gobio feeds on a variety of invertebrates. This gudgeon is an easy fish——to catch for beginners. A British angler caught a record 5 ounce gudgeon in 1990 on the River Nadder, Wiltshire.
• Eleotridae – Known commonly as gudgeons, many species in the family Eleotridae are also called sleeper gobies. Unlike gobies, Eleotridae gudgeons have paired ventral fins rather than a fused ventral fin. In Australia, gudgeons from the family Eleotridae are widespread and are popular for aquariums.
• Ptereleotridae – Gudgeons in the family Ptereleotridae are primarily marine species and are often associated with tropical coral reefs.

Gallery※

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  Gobio gobio, the gudgeon
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  Blue gudgeon, Ptereleotris microlepis

References※