Sorry if this doesn't belong here, but there are bichirs involved and I got no help in General Aquaria Discussion 
The tank in question is a 40G Long - 48x13x16. Filtration is two Aquatech 30-60s, each pushing 330 gph (currently running on just one since the butterfly fish seem much more active that way).
So far the inhabitants are 1 albino senegal (3-4") and 2 african butterfly fish. I'm going for an African Oddball theme, and I'd really love to add a delhezi and a small school of congo tetras but I don't know if that would be too much for the tank space?? Ctenopoma acutirostre and Synodontis nigriventris are also options, but I really want some peaceful middle swimmers so the tank actually looks alive from across the room.
So basically: 1) Can I add reasonably a delhezi 2) what else would you suggest?
Thanks for looking
The tank in question is a 40G Long - 48x13x16. Filtration is two Aquatech 30-60s, each pushing 330 gph (currently running on just one since the butterfly fish seem much more active that way).
So far the inhabitants are 1 albino senegal (3-4") and 2 african butterfly fish. I'm going for an African Oddball theme, and I'd really love to add a delhezi and a small school of congo tetras but I don't know if that would be too much for the tank space?? Ctenopoma acutirostre and Synodontis nigriventris are also options, but I really want some peaceful middle swimmers so the tank actually looks alive from across the room.
So basically: 1) Can I add reasonably a delhezi 2) what else would you suggest?
Thanks for looking