Gudgeon is a common name for a number of small freshwater fishes of the families Cyprinidae, Eleotridae or Ptereleotridae. Most gudgeons are elongate, bottom-dwelling fish, many of which live in rapids and other fast moving water. For the village on the Isle of Wight, see Freshwater, Isle of Wight. ... In biological classification, family (Latin: familia, plural familiae) is 1) a rank or 2) a taxon in that rank. ... Genera (many, see text) The family Cyprinidae, named after the Greek word for goldfish, consists of the carps and minnows. ... Genera ~35, see text The Eleotridae are a family of fish found predominately in the found in the tropical Indo-Pacific. ... A rapid is a section of a river where it loses elevation over a relatively short distance (that is, the stream gradient is locally steepened), causing an increase in water flow and (usually) turbulence. ...

Gudgeons in the family Cyprinidae

Various cyprinid gudgeons are found in lakes and rivers throughout Europe. Most commonly gudgeon refers to Gobio gobio, G. gobio is a rheophilic, schooling species that occurs in riverine habitats across continental Europe and the United Kingdom. G. gobio feeds on a variety of invertebrates. Invertebrate is a term coined by Chevalier de Lamarck to describe any animal without a backbone or vertebra, like insects, squids and worms. ...

Gudgeons in the family 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 ^[1]. In Australia, gudgeons from the family Eleotridae are widespread and are popular aquarium residents. In particular, the purple spotted gudgeon (Mogurnda mogurnda), the empire gudgeon, (Hypseleotris compressa) and the peacock goby (Tateurndina ocellicauda) are well regarded by aquarium keepers. Genera ~35, see text The Eleotridae are a family of fish found predominately in the found in the tropical Indo-Pacific. ... Fish anatomy is primarily governed by the physical characteristics of water, which is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs light more than does air. ... For other uses, see Aquarium (disambiguation). ...

Graham's gudgeon, Grahamichthys radiata

Gudgeons in the family Ptereleotridae

Gudgeons in the family Ptereleotridae are primarily marine species and are often associated with tropical coral reefs. Marine is an umbrella term for things relating to the ocean, as with marine biology, marine geology, and as a term for a navy, etc. ... A reef surrounding an islet. ...

Blue gudgeon, (Ptereleotris microlepis)

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