 John Dawes in the UK, in his book "Livebearing Fishes", reported a "L. melanogaster" x "L. nigrofasciata" hybrid male has been mated to female green sailfin molly.Two hybrid fry were obtained, one was raised to maturity, ending up as a molly-like fish swimming with its head up at an angle of 45 degrees and was unable to maintain an even keel.This hybrid fails to inseminate molly females provided and no further hybrid offspring resulted.