Oddly, I had a catfish poboy yesterday about 3 hours before I saw that snopes picture. Southerners who aren't well-travelled in the Pacific Northwest should note that this is not a common lunch counter item here, making the coincidence more extraordinary. In fact, I think this is the only catfish poboy I've eaten since I've lived here.
I'd say "plate of shrimp" here, but its almost too literal to work in this case.