"i have 2 dovii jag hybrids"
So they can cross successfully? I guess I assumed that they could, but I have a single male jag with a single female dovii and they have tried (without success) to breed at least four times now. Typically after the attempted fertilization the jag chases the dovii back to her side of the tank and guards the eggs on his own, but after 36 hours the eggs are gone (gobbled up I am guessing). This last attempt, the female dovii kept the male jag at bay, but same result. The jags swimmers work (he has fathered batches of jags with a female jag a few years ago), but they don't seem to be working with the dovii eggs. Do you suppose the eggs are fertilized, and the failures are behaviourally based (one eating the eggs on the other or something)?