
My post-doctoral research was in hybridization among endangered desert fishes here in the American Southwest, so it has made me happy to read that a new population of the endangered Desert pupfish (Cyprinodon macularius, above) has mysteriously appeared in man-made research ponds in Salton Sea, California. Many of the over 1000 specimens are juveniles, which has lead scientists to infer that substantial breeding is going on in the ponds.