Channa argus

\"Northern snakeheads are capable of surviving in water with very low oxygen content, giving them a competitive advantage over species such as pike and bass that require more oxygen (Sea Grant Pennsylvania 2007)\"; \"The snakehead has occupied the ecological niches vacated and has, in part, displaced the native pike and catfish.”

“It [Channa argus] causes considerable losses to the fishing industry in the summer months in Dautkul’ Reservoir and Lake Togyztore [Uzbekistan] by feeding on valuable food fish species: carp, bream, zander, and their young.”; \"Channa argus is considered to pose a threat through predation to threatened and endangered species, reduce biodiversity and to alter communities, especially those of naturally low species diversity (Courtenay & Williams, 2004).\"

“Chiba and others (1989) noted that C. argus and C. maculata introduced parasites to Japan, but did not detail the parasites involved or fish species affected.”, \"The Northern snakehead is affected by the following parasites which are also known to affect native species in various parts of the world: Mysosoma acuta (also affects crucian carp), Henneguya zschokkei (also affects salmonids), Cysticercus gryporhynchus cheilancristrotus (also affects cyprinids, perches), Clinostomum complanatum (also affects perches) and Paracanthocephalus cutus (also affects cyprinids, escocids, sleepers and bagrid catfish) (for more information on parasites carried by the northern snakehead please see Courtenay & Williams 2004)\"