ok. so I look at the tangrowth sprites REALLY close and I cant see the diffrence in the male and female tangrowth. whats the deal? is it a microscopic pixel that makes them diffrent?
A female Tangrowth's fingers are completely red while a male's fingers only have red tips. Source: http://bulbapedia.bulbagarden.net/wiki/Tangrowth_(Pokémon) male:
Female:
Its not very noticeable but there is more red on the fingertips of the female.
Magenta-colored part of the female's hands are longer
If you look closely at the Tangrowth sprites on the page below, you'll be able to see that. It's a very small difference, so it's easy to miss/ not notice.
Pokemon with gender differences