I've had a couple Tangs in my tank through the past few years and I'm starting to notice an odd trend. Almost every Tang I've every had has picked a fish to pair with in my tank and then follows it around periodically. All my previous tangs have always grouped with my clownfish. I wonder if that where the idea for "Finding Nemo" came from. At this time I don't have my clownfish in my main tank (but in a seperate tank). However, my new Blue Hippo Tang has suddenly decided the Royal Gramma is his new best friend. I guess its not a species specific thing. I just find this really odd and interesting behavior and was wondering if anyone had any similar experiences.