I find it unusal that ppl often mistake or think that a gold severum may be a discus, but because of the lack of gold (either lighting or picture quality) it is a severum, but it may be a hybird, RD with a GS.
Also, none of them are kenyi's (psuedotropheus lombardoi)
It would be nice to see the 3rd fish, but a little more clear. But seems like an african cichlid. But not a psuedo.
I thought the 5th may have been a lithobate. But at that size, the blue colour is rare, so if it is, it would be a male. Only reason I think this is because of the 2 small dark patches on the body.