Beringraja pulchra is a species of marine cartilaginous fish in the family Rajidae, commonly referred to as the skate. It is found in the cold and temperate coastal waters of the northwest Pacific Ocean, particularly around Korea, Japan, and parts of northern China. The genus name Beringraja refers to the Bering region, reflecting the broader distribution of related species in northern Pacific waters, while the species epithet pulchra is Latin for “beautiful,” likely referring to the patterned dorsal surface characteristic of this skate. In Korea, this species is known as 참홍어 (hongeo) and holds particular cultural and culinary significance.

Beringraja pulchra has the flattened, diamond-shaped body typical of skates, with broad pectoral fins fused to the head and a long, slender tail. It inhabits sandy or muddy seabeds, where it feeds on benthic invertebrates such as crustaceans, mollusks, and small fish. Like other skates, it is adapted to life on the ocean floor, using its body shape for camouflage and efficient movement along the substrate.

Aside from sashimi and fried preparations, Beringraja pulchra is most notably associated with fermented preparations in Korean cuisine. The fish is traditionally processed into hongeo-hoe, a dish made from fermented skate in which the flesh undergoes alkaline fermentation driven by the breakdown of urea into ammonia. This process produces a strong, pungent odor and a distinctive sharp taste that is highly valued in certain regional culinary traditions. The fermentation also alters the texture of the flesh, making it softer and more gelatinous.

Nutritionally, the flesh of Beringraja pulchra contains protein, collagen, and various minerals typical of marine fish. A distinctive biochemical feature of skates is their high urea content, which plays a role in osmoregulation during life and becomes central to the fermentation process after harvest. During fermentation, urea is converted into ammonia and other nitrogenous compounds, creating an environment that inhibits spoilage organisms while producing the characteristic sensory profile of the dish. Bioactive compounds associated with this transformation include ammonia and related nitrogen compounds, which contribute to both preservation and flavor.