This one looks more like from manga/ Rumiko's art.

Her hair's black, which means this is a genderbend of a character who cannonically genderbends. Does that mean it's Ranma-kun who fell in the Cursed Spring of Drowned Boy while training with her mother?

The_Occupant said:

Her hair's black, which means this is a genderbend of a character who cannonically genderbends. Does that mean it's Ranma-kun who fell in the Cursed Spring of Drowned Boy while training with her mother?

Nothing quite that elaborate. Ranma's hair is always black in the manga, the whole red-head thing is an anime-only thing.