Results for “alien species”

The reason we have recommended the use of non-Tanganyikan cichlid hosts above is because a successful captive spawning using Tanganyikan cichlid species has never been recorded! This may be due to an evolutionary process that has been observed in the lake, in which many cichlid species appear to have learned to avoid S. multipunctata when breeding. This is similar to the rejection of alien eggs by the host species in brood-parasatising birds. Because no species of brood parasatising catfish occu...

An exceptionally hardy and adaptable species tolerant of a wide range of physiological variables and flexible of diet, factors which have allowed it to become established as an alien species around the globe. Its high reproductive potential and low vulnerability to predation have made it a cause for concern to conservation scientists although as yet there remains no proof of it exerting a negative effect on native fishes in countries outside its natural range.