Peaceful five spot jewel cichlid fish tank

Smaller jewels are juvenile Hemichromis frempongi born in December 2012; current size is approximately 8-10cm. Their parents are the yellow pair occupying the right side of the tank. The tank is overcrowded, but who would guess other large jewels would leave those in peace. The 3-4 year old cactus plecos are remainder of the past Amazon aquascape.