I have a 10 gallon that I am placing my new juvies in rather than mixing them in with my larger haps, peacocks and a few mbunas. I am talking one inch or so for the various juvies. The juvies came from two LFS and two on line vendors. Everything was going fine, then I lost one....then a day or two later another and it continued like that until 12 became four. They each looked like the tail was eaten off. During the day there was no signs of aggression. When I got to four I just decided to put the remaining four in with the young adults. Then another of the four died! What's up do you think? Are there any peacocks or haps that are known to attack, to kill, at night. There are also some bottom dwellers as well in the ten gallon, specifically a Pleco and a synadontis angelicus.