the meanest one in our house in easily the RD he is physco, he took on a breeding pair of jags a few days ago, the jags had eggs down, he come straight in and started to eat the eggs, the 2 jags were biting him and it was like he couldnt feel it then he turnt around a smacked the female jag with one hit and blood was pooring out of her gills, the jags lived jue to a divider and the eggs that were keft are now wigglers.