This is my first saltwater aquarium. I have a 10 gallon tank with a large fiji live rock that was previously in my friends tank (he gave me it for free). I had two damselfish in the tank to help it cycle and everything was fine. The fish seemed to get along fine but yesterday i came home and one was dead! He didnt look like hed been attacked by the other one and upon close inspection of my rock i found small brown anenomes about a mm in diameter and little bugs that look like rollie pollies. Are these what killed my fish? And if so how do i get rid of them!