Can someone help me with the identification of this fish? This was sold to me as a Tyrannochromis Nigriventer but pictures on the internet show the T. Nigriventer as much lighter blue and without the greenish lower jaw. I am interested in the specifics because I want to set up a breeding colony.
My guy seems to be always dark blue. Or, is this coloration just a natural variant?
He's about 7" and swims around and about my 150 gallon peacefully with a couple of 8" Protomelas, an 6" Ahli and others.
Thanks for any help!

My guy seems to be always dark blue. Or, is this coloration just a natural variant?
He's about 7" and swims around and about my 150 gallon peacefully with a couple of 8" Protomelas, an 6" Ahli and others.
Thanks for any help!
