User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6005381-20130203132053/@comment-4009941-20130206064054

@ Link1275

A Rath is fully grown at Red or Green considering a ecology vid shows a green Rathian with its young, Capcom states that the difrent colors are simply mutations of color like many creatures have like a Orange Tiger having a White cub.

And I will say it again Black Rathian is not even its actual name, its a fan made name its real name is "Unknown", and for all we know its not even a Rath it could simply be a relative that dosn't even have a alternate appearance for males.

Another note I know what a old red rathalos looks like a HC Rathalos is a more mature older Rathalos,it has longer spikes like they had time to grow and a thicker more muscled body. No sign of blue color on it or silver, it actualy turned more red. Also a old Silver Los has the same changes to its body.