Abstract
In 2013, 71 specimens of Perccottus glenii Dybowski, 1877 were caught in Ukraine in a tributary of the Southern Bug River, known as the Hirskyi Tikych. Present study confirms the expansion of this invasive species in Ukraine and also in Europe.
Highlights
The Chinese sleeper, Perccottus glenii Dybowski, 1877, is a representative of the Odontobutidae family (Acanthopterygii: Perciformes), which originated in freshwater rivers flowing into the Japanese, Okhotsk and Yellow seas, in the Far East, Asia (Mori 1936; Berg 1949)
71 specimens of Chinese sleeper were caught in the Hirskyi Tikych River: 49 specimens were caught in May (38.3% of total catchment) and an additional 22 specimens in November
Most males were in the 3rd stage of sexual maturity (61%), with the lesser part in the 2nd and 4th stages (33% and 6% respectively)
Summary
The Chinese sleeper, Perccottus glenii Dybowski, 1877, is a representative of the Odontobutidae family (Acanthopterygii: Perciformes), which originated in freshwater rivers flowing into the Japanese, Okhotsk and Yellow seas, in the Far East, Asia (Mori 1936; Berg 1949). This fish was first introduced to European waterbodies following a release by aquarists. The Chinese sleeper is a small fish with a short life cycle, feeding on a wide variety of invertebrates, tadpoles and fish throughout its life cycle It has no fishery value and considered an undesirable invasive species, with a significant non-native range in both Europe and Asia (Reshetnikov 2010). The purpose of this study was to verify and confirm the presence of P. glenii in the Southern Bug River Basin
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