“The mating system of the Amazon molly is unusual in many respects. The Amazon molly is an all-female (...) fish. The eggs have to be pseudo-fertilized by sperm of males of one of two [distinct] host species, the Atlantic molly or the Sailfin molly.”
Para mais informação :
Schlupp et al. 1994 Science 263, 373 - 374
Schartl et al. 1995 Nature 373, 68 - 71
Schlupp et al. 1992 Behaviour 122, 88 - 104