Japan blue gene

Japan blue is easly identified by blue coloration of peduncle. Probably comes from feral population of  Poecilia reticulata living in Japan waters. It is y-linked. Some breeders belive it is possible to jump it on X chromosome – others belive it is not possible.

It is worth mentioning that population very similar in look to Japan Blue was found in South America. So called Lac du Rorota guppies. Never kept them tho.

Grzegorz Prusinowski examples:

classic classin02

red-doublesword red-doublesword02

Those males were created in unintentionally cross to females that might have been M. parae hybrids. They are big and the japan blue gene expression is not so standard.

big-japan-blue

big-japan-blue02

big-japan-blue03

Bolesław Gaweł Examples:
181120143 bm15 jbbcz8 jbbcz9 jbbcz13 jbsz5 jc7  snakeskin1