PORTLAND, Ore. (KOIN) -- A mysterious and rather unusual-looking fish with some very interesting stomach contents washed ashore at the beach in Seaside this week.

According to the Seaside Aquarium, a longnose lancetfish (Alepisaurus ferox) was found on Tuesday.

"This is one fish you would not expect to run across along the Oregon coast," according to the Seaside Aquarium.

It's unclear how long it was dead before washing ashore, but a longnose lancetfish resembles a barracuda. With sharp fang-like teeth, big eyes and a serpent-like body that can reach up to 7 feet long and weigh up to 20 pounds, little is known about the species, except of its unique feeding habits.

Longnose lancetfish, which range from the Southern Bering Sea to Chile and occupy surface waters to about 6,000 feet below the surface, are not exactly picky eaters.

"They are known to eat over 90 different species of marine life, including each other, and unfortunately, are attracted to plastics," according to the aquarium.

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In fact, a dissection of the longnose lancetfish's stomach contents found nearly whole fish, along with partially digested cephalopods and even some beaks.

"By studying what the longnose lancetfish is eating, scientists can better understand how the marine food web changes over time (if at all)," according to the aquarium. "It may also help understand changes in the food web brought on by events like El Nino or La Nina."

A "handful" of longnose lancetfish typically wash ashore on Oregon beaches during the spring and summer months, and officials at the Seaside Aquarium "often get a call when someone comes across one of these odd-looking fish wondering exactly what it is they have found."