One of my co-workers not only named his fish, he actually had a fish naming party that involved quite a few drinks...Not sure how he remembers all the names, as some were very creative and long. The only one I can recall is Ilene--a cichlid with one eye missing. The fish compensates be canting to the left while swimming, hence, I-lean...Sigh.
W'e named a few of the saltwater fish, but I don't think I've named any FW fish. For the SW: Old Blue--blue damsel, now about 5 year old. Medici: Scooter blenny, PJ: mandarin goby. Pablo: Picasso Trigger. Leo: Lion Fish. The octopusses were Loki and Leera. We also have one hermit crab in the reef who has been dubbed Ol' Yeller ever since he moved into a yellow FW snail shell.