Top left is an OB Peacock, I wouldn't call it albino as it has a black eye. Top right is a Yellow Lab, bottom left is an Albino Socolofi, and bottom right appears to be Sciaenochromis fryeri, commonly called Electric Blue Ahli, which is a different but related species. These are all Malawian fish. The OB is a known hybrid, but the other three appear to be genetically pure, though one can never be certain.
The catfish on the left is some sort of Hoplo, a Callichthyidae species from South America; best guess would be Megalechis thoracata. The Pleco is just about impossible to identify from that photo, but my best guess would be one of the "Common Pleco" types, which covers a couple of genera and numerous species. Best bet these days would be Pterygoplichthys gibbiceps, the Spotted Sailfin Pleco, but I'd have to see the dorsal fin to be sure.
Happiness may be the door to Heaven,
But Pleasure is not the Key.