Hi, I have 4 5-6" Carpintis/RD Hybrid with a 5" Cuban. My question is, is it possible to have a sub-dominant male of another species breed? Everyone leave each other alone, but I notice when the larger Carpintis/RD swims by, the Cuban slowly gives right of way. If the Cuban finds a female to breed with, would he? Even though he's not per se, top dog in tank?