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Northern Snakehead Channa argus

Northern Snakehead Channa argus. Native Areas. Russia China Korea Used as food source in native regions. Where Northern Snakeheads were First Found. Imported Food=Major Problem. A man purchased two Northern Snakeheads to make a traditional soup Man ended up just putting the fish in a tank

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Northern Snakehead Channa argus

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  1. Northern SnakeheadChannaargus

  2. Native Areas • Russia • China • Korea • Used as food source in native regions

  3. Where Northern Snakeheads were First Found

  4. Imported Food=Major Problem • A man purchased two Northern Snakeheads to make a traditional soup • Man ended up just putting the fish in a tank • He later released the two snakeheads into a local pond

  5. First Appearance of the Northern Snakehead • Crofton, Maryland is where the snakehead was first caught in May 2002 • It was caught in pond where the man confessed to releasing the two fish two years earlier

  6. Crofton, Maryland

  7. Later in the Summer of 2002 • A second adult snakehead was caught in the Crofton pond • A fisheries biologist and a angler caught about 12 juveniles in the same pond • This meant that the snakeheads were reproducing June July

  8. How was the Crofton Problem Addressed • In August 2002 Fisheries Services treated the pond • DiquatDibromide and Glyphosate • Rotenone was added to the pond two weeks later

  9. Characteristics • Sharp teeth • Larger and protruded jaw • Dorsal fin has 49-50 rays • Anal fin has 31-32 rays

  10. Teeth and Jaws

  11. Food (post-larvae/juveniles) • Post-larvae feed on plankton • Juveniles • Crustaceans • Fish larvae

  12. Food (Adults) • Crustaceans • Frogs • Aquatic insects • Fish • Perch • Carp • Bream

  13. Habitat • Slow moving water • Stagnant bodies of water • Muddy streams • Muddy substrate with vegetation • Bury themselves in the mud

  14. Size • Maximum size- 33 inches • Males are usually larger then females • Males have a higher dorsal fin

  15. Size

  16. How Problems Start • Pets • Out grow tank • Placed in ponds • Food Market • Illegally import snakeheads for consumers

  17. Questions?

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