Those are some great names-
Sushi theme for me
1oc clown- nori (female)
2nd oc clown- umame (male) spelling but its the 5th flavor.
Cleaner shrimp- chopsticks ( which I noticed someone had earlier, great name btw)
Pistol shrimp- wasabi
Royal gamma- no name yet! Welcome to suggestions that follow my theme. Tee hee!