electric blues are pseudotropheus socolofi.
These fish are very agressive and should not be kept in groups the same goes for melanichromis johanni. If you ever visit the stores and see munched fish I,ll guarantee they will be with socolofi or johanni
yellow can be beautiful in large groups witha green plants and white rock I have seen some amazing setups like this.
keep 3 females for every male you have yellow boys can be real promiscuious and stress a single female to death. Yellow females will breed easily from a young age .
good luck RAZA Man