Honest...I call him The Twerp. That's as close to a name as he'll get from me. He's a wild critter. He has a name, I guess, I just don't know it. I never force a name on any of my wild things. Not my snake nor my hawks nor falcons. My other fish have names because they were domestically bred.
I'm really flattered that you like my picture of The Twerp.
Do you mean as your avatar pic? Well, you see, I'm trying to find a new home for him where he'll be a breeder male (he'd really like that...hehehe). And perhaps his new keeper might want to use that for an avatar.
Of course, you're perfectly welcome to use the picture in your signature and to add it to your photo collection. Or even use it as an example to show people what a pretty Guitar smarigdina looks like.