(Critically Endangered) San Marcos Redtail Splitfin GoodeidXENOTOCA doadrioi San Marcos Redtail Splitfin The fish your friends have never seen, making them the perfect conversation starter. These hardy little fish are native of Jalisco, Mexico. Where they are currently listed as Critically Endangered in the wild, due to habitat destruction. NOW, You can become part of the aquarium trade trying to keep these wonderful little fish around for future generations to enjoy. Though these can be kept in community