Usually i would say its burundi variant, considerin straight line across eye from top to bottom of head, but rest of head is also very dark on this picture so im not positive, fish looks stressed due the dark colouring, are u sayin u had 9 and 6 died already? I mean isnt it time to ask why are they dyin and whats wrong with ur tank. Who is pickin on them, tank info details, other tankmates etc??!