|Black Carp - Wikipedia|
Black carp (Mylopharyngodon piceus) are also called black Chinese roach which probably should have been a clue. They have been introduced cautiously by the aquaculture industry to control snails. Strict controls on their transport as well as birth control measures kept them in check. Only triploid fish were permitted, those with three pairs of genes which makes them sterile. If this idea of releasing only sterile exotic species sounds familiar, Callery pears will probably come to mind.
|Black Carp - Duane Chapman USGS|
Several black carp with normal diploid genes have been found in rivers but the hope was that their infrequency would prevent successful mating. Now at least one pair has successfully mated. The Mississippi has the most diverse collection of mollusk species in the world and three-fourths of these species are listed as threatened or endangered. The spread of black carp which can weigh up to 150 pounds is a serious threat to mollusk diversity. Just what we needed, another $%#^ invasive species!
|Harbinger of Spring - REK|