is my tank ok HELP

[aps915]

in my 33 gal i set up brackish Ive got a mono sabea and a mono "nigerien"
also 4 elecric yellow labs with 2 plattys and 2 molleys 1 black zambian the guy at my local fish store told me it was ok to have all tee fish together but I think the mono sabea is going to get way to big way to fast he grows very fast Ive had him a month and hes at least doubled in size what should I do HELP

 

[Orion]

The electric yellows are a Rift Lake cichlid from Malawi, and it is not a brackish fish. You really should either take those fella's back, or setup another good sized tank for them, as I don't think they will do well at all in a brackish setup. The mollies are fine in brackish, but I'm not so sure about the platties. I'm not sure what a black zambian is.

As for the Mono's, yeah those guys are going to get way to large for a 33 gallon. I would either return them, or get a large tank.

 

[zzz22zzz]

Yes the mono's will need a 55- 75 gallon tank they get very nice sized.