Looking for Cuatro Cienegas Cichlids (Herichthys minckleyi)

Hi Everyone. I am in search of a Male Cuatro Cienegas (Herichthys minckleyi) Cichlid. For context, these are very difficult to come by species in the hobby. There were a central focus of a number of studies across multiple universities in the later 1990's an early 2000's as such some off-spring made it into the aquarium hobby as well. They are now listed as endangered by IUCN and as such are not fished for keeping purposed. I'd love to try and breed a pure line of TR Minckleyi Cichlids if I could get lucky enough to find a mate! Any leads would be greatly appreciated.