yes... anything in a particular genus will readily breed... examples (M. Estherae x M. Callanios), (Ps. Elongatus x Ps. Demasoni), (M. Auratus x M. Johannii), if a male of one and a female of the other exsist in the same tank without their own species' mate, THEY WILL cross. Also Peacocks Haps and Mbuna, can also mix together, although not as common it can and does happen... I.E. OB Peacock = Peacock + Mbuna
on a personal note: this tank looks almost exactly like my very first african tank from years back. I used white marble chip gravel, and black slate kinda bringing back memories... I wish I had a picture of it would have been funny
Thanks would it be difficult for them too mix breed Can you I.d these fish they are all Metriaclima or previously pseudrotropheus zebra. I have 3 blue zebras 7 ob morphs and a male red zebra!
I thought psudotropheus is the genus is mix match genus . where they dont know where they go.
Thank you. I'm not being rude I just looking for knowledge from you. Please don't take offense!
I have some melonchromis paralleus and some johanni I would like to see them cross breed.
I was working at lowes and they gave me a crate load of broken slate for 30 bucks lol
I see you post on alot of post you seem more knowledgeable then me but this is new experience for me, I finally talked someone who I can learn something from lol! Thanks man
Also you know anything on super red texas cichlids and thanks for your reponse.

Thanks for the compliments... I feel special...
No offences taken at all...
Pseudotropheus is somewhat of a mix match, but there are still a lot of similar species that if they were regrouped would be regrouped together... for instance the Ps. Demasoni "mozambique" is thought to be a natural hybrid of the Demasoni and Elongatus... so if it happens in nature it will definatly happen in the tank... because its extremely rare naturally
Im not understanding what you are asking me about IDing your fish? You have named what I have seen already Red = Estherae, Blue= can be either Male Estherae or Callainos, and OB= Estherae OB (only females are OB)
Red Texas Cichlids are CA/SA Hybrids = Texas Cichlid + Red Devil, I would guess Highly aggressive due to both Texas and RD being aggressive and hybridization usually intensifies natural aggression... I would say that it would be a fish killer
I agree with most of the above except that the OBs are all female. I use to breed OB zebras and there were definitively male and female OBs. The blueberry strain is the OB version of cobalt blue zebras. I believe you are thinking of Labeotropheus trewavasae where the females are OB and the males are blue/red top.
http://www.malawicichlidhomepage.com/aquarium/mbuna_estherae.html
OP looks like you have metriaclima estherae(both red and OB), and metriaclima callainos. Blue male estherae are not very common so most likely the blue ones you have are metriaclima callainos. They all can and will cross breed.