How long does the adverage red tail shark live.. i have noticed his shimmering dark body start to get a gray tinge to the color and also he actually looks like he is graying up around the mouth area. i have had him for almost 6 years in a 220 tank with 2 pacus..he loves them and swims under them for protection. Do you think this is just age catching up with him or is something happening to his health that i can help him with medicine etc. I want to keep him going as long as possible so if anyone has any idea of whats going on with him please let me know..here is a picture of him..the old guy.
, brought him home he was swimming sideways and all his fins were torn
, and now is thriving