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Message: <blockquote data-quote="Dave Jay" data-source="post: 129003" data-attributes="member: 27677">Should I bring up "Hybrid Vigour"?Meh he he he heh!!! (Evil laugh)Not so long ago, less than 100 years , Heros severus was discovered and collected for the aquarium hobby. The original wild caught severums were touchy, but enough survived and bred to establish captive bred severums in the hobby. These captive bred fish thrived and bred well with few of the problems encountered with wild caught fish. Years later it was established that two different species had been collected originally, and the severums in the hobby were sufficiently different enough to both parent species to not qualify for either species name. They were their own species and bred true 100% of the time, a factor that does define a species. Inadvertently a tough species of Severum was "born".More popcorn anyone?</blockquote>