Goodbye dear Sergeant

So, here is Phoenix, not only do we live with Mama and Papa Nicks, but also with two marine habitats most affectionately referred to as "The Fish," consisting of (in tank 1) a clown fish and two "Dory" fish (see Finding Nemo) and also a few snails and Guido the crab; and (in tank 2)a Tang fish (see again Nemo and the fish with bubbles) 2 sergeant major fish, a cleaner shrimp, one known as "Batman," some more snails, a crab, and a starfish.
Lately we have noticed that one of the sergeant fish has been fighting for his life. It all started last week, not more than a week since their main care givers left. The two SM fish were chasing each other around the tank...alot. Well, all of a sudden, the one SM decided to lay on the floor of the tank in a little house and really freaked me out. I like fish and all, but the death of a fish has always been somewhat traumatic for me. In the 8th grade I wrote a poem about how I had killed my two goldfish. Anyway, after precariously picking up the house with some tongs, the fish was still alive. Well, we watched this poor fish suffer for a little more than a week. Yesterday, things seemed to be looking up! I had hopes that SM might recover, he was actually doing laps around the tank! Then I noticed that his quite alive counterpart was actually eating him alive!!!! So at that point I knew it wouldn't be long. This morning, upon turning on the tank light, I discovered SM laying on the floor, not in his usual spot, and with a crab crawling across him. Luckily Jason was home to give him the Big Tuna Salute to the Water Treatment Plant in the Sky. Good old Sergeant fish, we'll miss you! Let's hope we have no more casualties before the 'rents come home.