Ok-
Yellow Tang-"Flat Sammy"-for obvious reasons!
Lawn mower blenny-"Homer"-Doh!
Coral beauty angel-"Fred"
4 green chromis-"The Pals", cause the school together
Blue damsel-"El Guapo"
Royal Gramma-"George"
about 40 different hermit crabs-all referred to as "Crabby Patty"
Most of these were given by my wife, who is very cute about it, except Homer-he was the only one I actaully named.
Still haven't named the pair of ocelaris clowns- I'm resisting the obvious "Nemo" and "Marlin"