It sounds like Fish would wake up at the crack of dawn every day so's to not be late for... for... erm, what would you be late for, Fish?! The fishing, perchance? Best luck earlie in the mornin'... But surely you don't eat your own kind! Hmmm, I'm lost! eek, on a desert isle at that!! I'm glad I happen to have with me:
1. The W&G fishing pole I borrowed from mud
2. W&G dvds with the electronics to watch it plus a solar charger to make very little impact on the island 
3. Cracking Animations
4. Plasticine, on condition*
5. Cuddly Gromit (I won it so it's special!)
*If it's a really hot desert island I'd want Sculpey, or else I'd just cry at the melting plasticine 