So I bought an ocellaris clownfish from my LFS and named him Mercury! He was an energetic little dude that enjoyed saying hi when I walked up to my tank. One morning I woke up and I found him dead and stuck to the back of my powerhead I had taken off the fish guard so that I could get the best angle for optimal flow in my tank, but now I would rather have poor flow than having blood on my hands USE THE FISH GUARD ALWAYS!!!!!! I am ashamed that I am the reason my clownfish died but I have to share my story so that hopefully it can be prevented in the future.