It is common knowledge that the beer field is crowded, when it comes to trademarks. But many steps further, even the beer-fish-trademark field is crowded, it appears.
And so on. NPR noted:
American trademark law lumps breweries together with wineries and distilleries, making the naming game even chancier. A widely circulating rumor has it that Yellow Tail Wines, of Australia, came after Ballast Point Brewing Co., in San Diego, for naming a beer “Yellowtail.”
Ballast Point’s pale ale is now conspicuously lacking a fish-themed name (a signature, if not a trademark, of the brewery), though an image of a brightly colored yellowtail still resides plainly — and legally, it seems — on the label. A spokesperson for Ballast Point said the company could not discuss the matter.