Oarfish Pictures Show the Longest Bony Fish in the Deep Sea

The oarfish is a large bony fish that lives in the deep sea. It gets its name from its slender, ribbon-like body, and taxonomically it belongs to the family Regalecidae in the order Lampriformes; it is not the same species as the cutlassfish commonly seen on dinner tables. It is one of the longest bony fish known to date, with adults reaching several meters, and it is widely distributed in the deep waters of temperate and tropical seas. Most oarfish pictures circulating online come from strandings, accidental catches, or chance shots taken by underwater detection equipment, which makes them all the more intriguing.

In these pictures, the oarfish appears silvery white overall, often with irregular dark markings. Its most striking feature is the long dorsal fin that runs from the top of its head all the way to the tip of its tail, with the front portion of the fin bearing upright red fin rays shaped like a crown. Its body is laterally compressed, like a long silk ribbon, and when it swims it mainly relies on wave-like undulations of the dorsal fin. Because of its slender shape, it is often mistaken for an oversized cutlassfish, but the two differ clearly in body color and fin shape.

Because it lives year-round in the deep sea below several hundred meters, people rarely have the chance to see a live oarfish, and clear, complete pictures are uncommon, which adds to its mysterious aura. In some coastal areas, there are sayings linking it to unusual sea conditions, but such claims have no scientific basis, so there is no need to read too much into them when you see related pictures.

Netizens often ask whether oarfish can be eaten. In fact, it is not a traditional food fish; capture records are rare, and it is basically never seen on the market, so it is a completely different matter from the cutlassfish used in braised cutlassfish. When admiring oarfish pictures, you can focus on the bright red long dorsal fin and the ribbon-like body. Grasp these two features, and you can recognize this deep-sea visitor at a glance.