Currently have a 40 gallon breeder with some sand and minimal rock right now, and had 1 blue damsel and one stripped. I wanted to add some schooling fish, so my friends and the lfs suggested some blue green chromis. So I got five of those. After acclimating and keeping them separated for a while, I added them to the tank.
First day was fine. Last night, I came home, fed them and myself, then went shopping. Came home a couple hours later, and one was found like this:
http://youtu.be/WZL89uf3gR4
So I separated him, but he died a couple hours later. I go to bed, wake up in the middle of the night and decided to check the tank, and a second one was dead at the bottom. My striped damsel was pecking at both while they were down, but I suspect he is the culprit in beating them up.
So, is my striped damsel gonna do this until they're all gone? Is there something else I should do with the tank? I did feed the 2 damsels before introducing the chromis to the tank, and rearranged some rock. Do I need to add lights? The striped damsel is calm during the day, but at night he seems to pester the hell out of the chromis.