I never set out to name my fish, but they acquire names with time. The descriptive phrases get annoying. My favorite name is Marcin Goldfish. This was the "big white guy" among my initial group of 7 "feeders" from Petsmart. It struck me one day that I should name him after the "big white guy" on my Orlando Magic, Marcin Gortat. ( Marcin is pronounced "March in" and is the Polish version of Martin.) So I named him Marcin, but "Marcin Goldfish" just rolls off my tongue so easily, so that's his name now. Sadly, Gortat was recently traded, but his namesake stays in my pond.
The others in his group: White Nose, Beauty, Fatso (the biggest), Red Rascal, Pumpkin, and Chosen One. The last was the one fish I asked the girl to get for me. Otherwise I just told her to pick out healthy-looking fish in a variety of colors. A few months later I saw a beautiful shubunkin in Walmart. This one spent a month in quarantine in an aquarium, and I wound up referring to it as my Pretty Baby, so that name stuck. My next shubie tried to hide every time I came into the room, even though I made a point of only coming in for feeding. That's Spookyfish, of course. He finally settled down when I got him some companions, two more feeders. Valentine was the only possible name for the white one with a perfect red heart on it's head. The other one, a very tiny sarasa comet with long fins, doesn't have a name yet. I initially tried Lipstick for it's red mouth, then Butterfly, but nothing has stuck. Most recently I picked up a pair of shubies from Walmart. They are much alike in size, color, and behavior, are fun to watch, but don't have names yet.
Incidentally, all my goldies are "he" until proven otherwise.