Share via Email 'A topmouth gudgeon, which could pass itself off as a sardine in a piscine identity parade. Pinned to the barricades were signs warning: A government statement reported the operation triumphally. So this Asian interloper, which could pass itself off as a sardine in a piscine identity parade, is on its way to joining the fathead minnow and the black bullhead catfish as unwanted immigrants that have been successfully eliminated since
Watery end of the unwanted topmouth gudgeon | Claire Armitstead | Opinion | The Guardian
Outflow stream, Crampmoor fishery Hampshire Date of first record: Pseudorasbora parva, Topmouth Gudgeon Origin Topmouth gudgeon originates from East Asia, including the basins of the rivers Amur, Yang-tze, Huang-ho, Japanese islands Kiusiu, Sikoku and the southern and central parts of Honsiu , western and southern parts of the Korean Peninsula and Taiwan Minkiang river system. First Record Introduced in southern England in the mids, with the first record in from the outflow stream of Crampmoor Fishery in Hampshire; note that this facility was also the source of the introduction of Sunbleak or Belica Leucaspius delineatus. Pathway and Method Introduced as an ornamental species with subsequent escapes into natural waters. The small adult size facilitates escape from enclosed stillwaters and quick colonisation of connected waterbodies. Some introductions may be as contaminants with other ornamental fish with possible further spread by use as baitfish.
EA progress in eradicating the deadly topmouth gudgeon
Matt Brazier , Posted on: Animal Health , Aquaculture , FFN , Finfish News , Monitoring Close-up of a Topmouth Gudgeon The Environment Agency EA National Fisheries Services are leading the way in the UK developing tools and techniques to contain, control and eradicate high risk invasive non-native fish species The topmouth gudgeon Pseudorasbora parva, is a small non-native coarse fish from Asia, introduced to the UK from mainland Europe in , and first formally identified at a fish farm in Hampshire in Following introduction, the species spread, through a number of routes including fish farm movements and the ornamental fish trade, invading stillwater sites across England and Wales. How damaging is it?
In its native range, the topmouth gudgeon typically breeds between May and August, but it may start breeding slightly earlier in parts of Europe 2 3 4. During the breeding season, male topmouth gudgeons establish territories which are aggressively defended. Larger males are likely to be more successful at defending a territory and attracting females 7. In most members of the Cyprinidae family, females only spawn once a year, scattering large numbers of eggs which are left unguarded and vulnerable to predators 7. However, the female topmouth gudgeon lays several batches of eggs over the breeding season, and the eggs are guarded by the male until they hatch.