For a red tilefish to be called Wakasa guji, it must be caught in Wakasa Bay by longline or hook-and-line, weigh at least 500 g, remain fresh, and have an attractive, well-kept form. At port, the fish is weighed, its shape is checked, and damage is inspected. The name is attached to the body of the fish as well as to a place on a map.
The label keeps part of that route visible. Selected fish carry the landing port and vessel name, so the product can be understood through a port, a boat, and an inspected fish. The Fukui Prefecture Federation of Fisheries Cooperative Associations stands behind the regional brand framework; in plain terms, that framework supports a boundary built from catch area, fishery method, freshness management, size, color, shape, and labeling.