Without a doubt it's my Fahaka puffer. In second would be my Mbu. Nobody could be happier to see my wife or me then Aunt Bea. She hides when other people come around, and sneaks a peek out of her log to see if it is safe to come out. She won't eat if anyone else try's to feed her a tilapia filet. She will eventually eat a crawdad or snail from a stranger. She is the funniest fish I have ever owned.