I just had a tragedy happen this week. I have (had) a 75 gallon with 2 Jacks, 1 red devil and a big RBP, the jacks where male and female and paired off while the red devil stayed on his side of the tank in fear of the big male jack, but tank was very peaceful for aggressive fish. Well, after staying away for the weekend i returned home to find my tank cracked and the water leaking everywhere(fricken pacu). I had a spare 50 gallon in my basement so I set that up and moved the 2 jacks and red devil to it and all was well, went to bed. Woke up to find my girl jack dead, fins/scales stripped by the red devil, i was shocked and pretty upset as i really like (liked) my jacks. My red devil is only about an inch smaller than big guy (male jack he's about 8.5-9") and is overly submissive around him (swimming nearly verticle with its head down) big guy now activly goes after him(it) now that his girl is dead and i thought it was purely a revenge fight. But today friday I wake to find them swimming playfully and peacefully together and sharing the cave. SO i do some reseach on identifying female red devils and i realize he is a she. So I have a female red devil (yellow with black eyes named banana) and a male jack who seemed to have paired. What is the likelyhood they will breed now that they are alone in the tank with no distractions? Also i've tried looking for photos of what the hybrid would look like and cannot find a jack/devil hybrid, if you can point me in the right direction i would appreciate it.