Amazon molly fish — native to Mexico and Texas — are all female. A 2018 study shows Amazon mollies are thriving, with no signs of “genomic decay” when compared to two other “two-sex ...

Mollies are social fish, preferring the company of other mollies and similar species. WebMD recommends keeping at least five mollies at a time, preferably with a 2:1 female-to-male ratio to ...

Amazon molly fish — native to Mexico and Texas — are all female. A 2018 study shows Amazon mollies are thriving, with no signs of “genomic decay” when compared to two other “two-sex ...

Female Mexican molly fish tend to go for big, colorful males, so what's a scrawny, drab guy to do? Scientists say he can flaunt bisexual behavior to bag a mate. Among Mexican mollies (Poecilia ...

Soccer fans aren’t the only ones on Earth who make waves. By Veronique Greenwood In the sulfur-infused ponds of Tabasco State in Mexico lives a tiny silver slip of a fish, the sulphur molly ...