Did you see the parents do it? Most times EBA are good parents.I was wondering why they were eating the fry exactly 3 days after the fry were free swimming they disappeared no trace and only the female would be guarding them as the male would be chasing the other fish
I suspect it could have been the other fish in the tank. Not the parents
Parents can protect the fry until they get to be free swimming then it’s a lot tougher for them because the fry venture off some and are able to get picked off.