Fish Compatability

[troutfly]

I have a few questions. I have a 55gal. right now with 2 Congo Tetras and a 5" Black Ghost Knife. I am looking to add more fish. I know I am getting 4 more congos but I was wondering if I can add 3 or 4 American Flag fish? 3 or 4 Flagtail Prochilodus? 3 or 4 Austrailian Rainbows? I want to populate it with schooling fish any sugestions if these fish won't work? I don't want fish that get too big and won't pick on the fish I already have.

 

[Ferris]

Not sue about the Flagtail Prochilodus as i have no experience with them but the American flag fish or Rainbows should work fine.

 

[troutfly]

Any other help from anyone here?

 

[Blue Lobster]

Flagtails get large, like 10" each so plan accordingly. Australians don't get as big.

Either way, any of these fish should be ok with the BGK and congo tetras.