:D Nah, I don't mind at all. Actually, my username is both based on my name(s), on the fact it'd be fitting in a fish forums (and because I'm not creative), and also the typical abbreviations for "Just Kidding" :D I actually find this very amusing, and I doubt anyone could mix us up, unless your profile picture would just so happen to become a red veiltail and they were reading quickly XD.
No need to feel worried or sorry, you didn't do it on purpose, and even if you did it'd still be fine. There are actually some user's with names exactly the same like 1fish2fish and OnefishTwofish and such.
Hi JKfish - I noticed the striking similarity between our user names and wanted to apologize for my unwitting decision!
I based my username off of my name (since my name is quite appropriate for a forum about fish!). I didn't realize there was already someone with so similar a username! I apologize if it bothers you. I really hope no one confuses you for me.
The worst part is - if I'd decided to use my full initials, and capitalize like I usually do, I'd be KJFish!