4x motoro , 2 female and 2 male. The male or maybe even both of them are mature. Tank mates are Geophagus altifrons. I cant see them as any reason of this, geo`s are not pickys. I also have a m8 that has the same combo with no problems. There is 6 of them. But the male matured lately, and ive read that they can mature within 2-3 months if they smell the fermouns(dunno how its spelled) on the male if she is ready. But i dont think she is ready, any way to tell?