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The stone moroko (Pseudorasbora parva), also known as the topmouth gudgeon, [1] is a fish belonging to the Cyprinidae family, native to Asia, but introduced and now considered an invasive species in Europe and North America. The fish's size is rarely above 8 cm and usually 2 to 7.5 cm (0.79 to 2.95 in) long.
Gudgeon is the common name for a miniature barbel and a number of small freshwater fish of the families Butidae, Cyprinidae, Eleotridae or Ptereleotridae. Most gudgeons are elongate, bottom-dwelling fish , many of which live in rapids and other fast moving waters; however, many can be found in still waters.
Kessler's gudgeon is a shallow-bodied, silvery fish with a pointed snout that grows to a length of about 12 centimetres (4.7 in) or occasionally 15 centimetres (5.9 in). It has a pair of barbels by the mouth which help it locate food and which are long enough to reach to the far side of the eye. [ 3 ]
Western carp gudgeon are purportedly the most common of the carp gudgeons. However, recent genetic research suggests that the carp gudgeons are a cryptic species complex composed of at least four species and many hybrids; their taxonomy is extremely complicated, unresolved, and not accurately reflected by current scientific and common names.
The Dalmatian barbelgudgeon (Aulopyge huegelii) is a European ray-finned fish species in the family Cyprinidae.It is the only member of the monotypic genus Aulopyge.The genus name is derived from the ancient Greek aulós (αὐλός, "flute") + pygé (πῦγή, "behind, rump"), and thus means approximately "fluted tail-stem".
The northern whitefin gudgeon (Romanogobio belingi) [2] is a species of freshwater fish in the family Cyprinidae. It is distributed in the northern Black Sea basin ( Dniester , Southern Bug , and Dnieper riverine systems), southern Baltic Sea basin ( Oder , Vistula ), southern North Sea basin ( Elbe , Rhine ).
The Soldatov's gudgeon (Gobio soldatovi) is a species of gudgeon, a small freshwater fish in the family Cyprinidae. It is found in Asia in the Amur River drainage in Russia and China, on the Sakhalin Island, and in Lake Buir in Mongolia. It is a demersal fish, up to 12.0 cm long.
Graham's gudgeon, Grahamichthys radiatus, is a species of goby of the family Thalasseleotrididae, the only member of the genus Grahamichthys. This species is found in rock pools and in the neritic zone , to 50 metres (160 ft) in depth, where sand or mud is lies around and partially buries rocks, shells, or other objects. [ 2 ]