Hi Littledinghy,
You are very perceptive. Swordies avatar is a swordfish.
The title Mahi Mahi is awarded to fishraiders who have made over 6,000 posts
At the moment swordie is the only person who has attained that rank.
You will find under your name is BREAM as you have made over 20 posts
The fishraider logo has a dolphin fish or mahi mahi on it
Cheers mrsswordie