This unique deep-sea fish has been in the news recently. Two dead oarfish (Regalecus glesne) were recently found within a week of each other, washed up on beaches in Southern California. Scientists know very little about oarfish, and only a handful have ever been seen alive.
Oarfish have an elongated, reddish dorsal fin that spans the length of their body. Its gelatinous, silver-blue body is ribbon-shaped, and can measure up to 50 feet and weigh about 600 lbs. Oarfish have no visible teeth, and feed on plankton and small crustaceans.
Oarfish are solitary, and little is known about reproduction. Some researchers have witnessed spawning occur from July to December off the coast of Mexico, when eggs are released into the water and left floating. Once the baby oarfish hatch they feed on plankton.