I think Tyler was trying to show the OP how quickly things can go badly with breeding jags...
My bad. Sorry. I thought he initiated the post. It happens fast and always when you aren't watching.
I think Tyler was trying to show the OP how quickly things can go badly with breeding jags...



That behavior of the fry nibbling on the slime coat is something that I documented with video. It's called "glancing". My male and female managuense would lay on their side and let fry nibble. They would make a series of quick snapping movement with their jaw which looked like they were alerting the fry. It's probably the fish equivalent of mothers milk providing nutrients needed. They only do it for a couple days. The video is below if anyone wants to see it. I've been told by Juan Miquel at CRC that it's the first time he seen it recorded.
Very cool. I understand discus also feed young this way. Are there any other cichlid species that do this?
I wasn't aware that the CA cichlids had contact feeding...so I'm not really sure. I've had similar instances where the fry would nibble to a point where the adult fish was damaged (my Dovii come to mind) So my guess is that it happens in more than you would think.
I think the parents being canabalized has much to do with the way we keep aquariums, trying to discourage and clean algae all the time. In nature there is constant grazing, of algae and the life that lives within, and fry seem to need to eat constantly for proper growth.
After a few of these canabalizing instances, I started letting algae "over grow" in all fry tanks, and moving algae covered rocks and wood from adult tanks to fry tanks as needed, this helped curb the parents being damaged a bit. If heavy culling is done, and only a dozen or so fry are planned to be kept, this is less a problem, but when trying to keep hundreds, feeding them all can be a challenge.