id my silver dollars

[dmopar74]

i have 9 silver dollars and it seems i have 3 different kinds. please help me id them and tell me what others there are so i can aquire them! pic 1 is my single spotted sd-3", 2 is my 4 largest sd's, also the youngest-4.5", pic 3 is my 4 mid-size sd's which get 2 large black spots on em when breeding-3.5"

 

[Bogwoodbruce]

You look to have got spotted and standard, I've got lots of metynnis in my tanks. I've got 11 dollars, 4 spotted, 4 red hook, and a yellow hook.

 

[dmopar74]

do you know where i could look into getting some of the more rare sd's?