What should I name my new betta buddy?

He’s to be an office fish; a little celebration of my promotion and new permanent workstation.* He’s a half moon betta (though not near as well bred as that fellow), and has a light cream and iridescent green body and dark red fins and tail, shot through with the iridescent green of his body.

I was thinking maybe Mr. Mooney because I have warm childhood memories of The Lucy Show. But the honorific seems a bit formal for such a friendly little guy. Any suggestions?

*This is not an impulse fish to be kept in a cup by my keyboard. He will have a 2.5 gal, food on Saturdays, and a heater and pump if he needs them (my last little guys did, but they seem to be very individual critters so we shall see).