Asian Topmouth Gudgeon (Pseudorasbora parva)

Species

Distribution

Asian topmouth gudgeon
(Pseudorasbora parva)

Photo courtesy of GB Non Native Species Secretariat

To view NBN location data click here

Impacts

Pathways

• Very rapid breeding rate (>4 times faster than native fish) results in rapid population growth once established.
• Severely impacts other fish species through egg predation and their vast consumption of plant life and invertebrates which alters natural ecosystem processes
• Carries a parasite, similar to, or possibly the same as, the disease called the ‘rosette agent’ that is a threat to salmonids and cyprinids.

• Escape from aquaria trade.
• Deliberate introduction as fish bait.
• Introduction of fish/water from contaminated area

Management

Prevention

Do not discard or introduce into waterways. Examine for presence in water transferred from known contaminated areas.

Physical Control

None

Chemical Control

Eradicated from 5 sites in UK using a fish orientated pesticide

Biological Control

None.

Links

Non Native Species Secretariat Fact Sheet

Environment Agency Fact Sheet

DAISIE Fact Sheet