All 3, P. multicolor, P. philander & P. nicholsi come from the same general area. They "cover the entire catchment area of the upper Nile and Lake Victoria, i.e. covers the west and the south of Uganda, Kenya and the northeast of Tanzania." (Quote fromLinke & Staeck - African Cichlids II, Cichlids From East Africa) They all attain about the same size (3") and are not too particular about their water requirements. The URL for the first photo is taken from this book and described as Pseudocrenilabrus multicolor 'victoriae', that must just be a location & color version of "Multicolor". I have never seen one with so much yellow. I myself think that P. philander is the less colorful of the three species described to date. They are a very eay mouthbrooder to work with but you should have at least 3 or 4 females for each male, Even more females is better.