Orange roughy, Hoplostethus atlanticus, is a deepwater marine fish found across the Atlantic, Pacific, and Indian Oceans. Increasingly harvested as a food fish, especially off New Zealand, it is prized for firm flesh with a delicate, shellfish-like flavor. Marketed fresh and frozen, it suits baking, grilling, and frying. In fisheries science, orange roughy is notable for extreme longevity and slow reproduction, making stocks vulnerable to overfishing and demanding cautious quota management. Sustainability certification and catch limits aim to protect populations. For consumers, its mild taste and meaty texture offer versatility, while responsible sourcing remains central to its place in seafood markets.