How much should I ask for being fair. I paid like $85 for him when he was a tiny bugger! Out of 3 he's the survivor!

I have had this fish for years, but now I am down sizing but don't know what to label it and how much to ask. Please help me our with some info so I don't misprice it. It's like 8 inches long.

http://i165.photobucket.com/albums/u51/yourfishluvsme/IMG_8306.jpg
http://i165.photobucket.com/albums ...