Silver Tip Tetras

[Tw3lv3]

hey guys n gals how many silver tip tetras can i have in my setup?

I have a 125l juwel rio

ive got 3 angel fish (2 are nearly adults and 1 baby)

2 swordtails

and im planning on getting 5 julli cory's

and i was going to get a shoal of silver tip tetras to finish off my tank but im unsure on how many to have any1 got an ideas?

Cheers,
Tw3lv3.