90% of all hybrids are Male. Is this correct?
Not necessarily. Depending on the species and which individual is male or female will have influence on gender of the fish. Percentage of males can range from a little over 50% to up to 99% depending on the above items. I think there are "standard" photos of the RES hybrids available on this forum. I will see what I can find. ewest has a good inventory of fish pics. Keep in mind the pictures could be of male or female fish. Probably which species was male can probably affect the final coloration of the F1 individuals.
