Hey everyone! Toshu's been doing fine till recently. I was looking at him and noticed how the end of his tail fin is looking a bit ragged. My friend came over and said the same thing. I'm not sure what fin rot really is but i know my aunt had the same problem. I've only had Toshu for about a month, and bought him from Petsmart. Regardless I was wondering if someone could explain fin rot to me, maybe have pictures and help me understand how to treat it. Thanks for the help! I wait eagarly, I'll be going to petsmart saturday and need to know what to buy for him! Thanks