Help with identity please

[Metermaid]

This fish is around 6mths old and has recently had a colour change and become the dominant male in the tank - any ideas on his identity please?

 

[vantgE]

Looks like maylandia lombardoi, does kennyi ring a bell?
Something is looks off though so I could be wrong

 

[Ferris]

I'd go with lombardoi, looks like a male in the process of changing from yellow to blue.

 

[AmberC]

I have no idea, but hes pretty