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Extinction is a real possibility for three species of tunas. That’s one of the messages from a new study released today online in the journal Science . Researchers assessed the range and populations of...
Starksia blennies, small coral reef fish with elongated bodies, have been well-...
CREDIT: Chris Kenaley The Mystery Develops Flash forward to 1956, when...
The majestic and highly predatory red lionfish ( Pterois volitans ) , native to...

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Starksia blennies, small fish with elongated bodies, generally native to shallow to moderately deep rock and coral reefs in the western Atlantic and eastern Pacific oceans, have been well-studied for more than 100 years. It would...
Follow a journey with satellite tags placed on bull sharks and tarpon. Both...
When most people think of catfish, they think of a freshwater fish. But the...

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Dr. Carole Baldwin never expected to find seven new species of fish among the Starskia blennies she was studying at the...

The Ocean Blog

An X-ray image of grooved razorfish ( Centriscus scutatus ). Razorfish are encased in thin, transparent bony plates attached to their spines, which you can see in the X-ray. Also known as shrimpfish...
Hardy head silversides ( Atherinomorus lacunosus ) are abundant fish in shallow water seagrass meadows throughout the Indo-Pacific that often form shoals. They feed primarily on zooplankton and small...
The robust oval, spine covered body of a long-spined porcupine fish ( Diodon holocanthus ) is revealed in this X-ray image. To ward off predators, a porcupinefish inflates its body by pumping water...
Pearlfish are slender, eel-shaped fish that often live inside various invertebrates including sea cucumbers. Because a sea cucumber breathes by taking in water through its anus, a pearlfish can wait...
This lanternfish ( Diaphus sp .), found in the Red Sea, has light-producing photophores along its ventral surface (belly), and a nasal light organ that acts like a headlight. Hear scientists tell...
Find out more about the field of ichthyology and the vast collection of fishes at the Smithsonian's National Museum of Natural History --the largest in the world! Find out how these collections were...
A tiny yellow goby, Lubricogobius exiguus , living inside an abandoned can on the seafloor; Suruga Bay, Japan
The whale shark ( Rhincodon typus ) is the largest fish on Earth. They spend most of their lives in the deep water up to 200 meters or more, but swim up to the surface to gather food and warm their...
This is an unidentified moray eel , collected from 650 feet off the coast of Curacao. Morays are very secretive animals that tend to stay hidden in caves and crevices. Researchers with the Deep Reef...
A Tapetail is caught on film while swimming over a coral reef off the coast of Japan. Learn more about this unusual organism -- and how it was used to solve a taxonomic mystery .
In the spring of 2011, a research crew from Oceana spent two months in the brackish Baltic Sea . The Baltic faces challenges from pollution, algae blooms, over fishing, and invasive species. Oceana...
A beautiful cut of Atlantic salmon ( Salmo salar ), a popular species among seafood lovers that is in severe decline. Check out our guest blog pos t by Oceana's Emily Fisher on the explosion of...
Back at the lab, researchers sort the fish specimens they gathered in the field.
The ocean is home to many moms of all shapes and sizes: from charismatic polar bears and dolphins to small fishes and shrimps and more. Learn about some of the diverse parenting habits of marine moms...
A squat lobster and blackbelly rosefish find shelter on a Lophelia pertusa coral reef off the southeastern United States. The Johnson-Sea-Link submersible captured this image in 2009. Explore more in...
The sargassum frogfish Histrio histrio (Antennariidae) is a small but voracious predator - it can ingest animals up to it’s own size! The fins of the frogfish are perfect for creeping around in the...
The larger fish in this picture are called sweetlips ( Plectorhinchus ) because of their big, fleshy lips. There are over thirty species of sweetlips, which tend to live on coral reefs in small...
Blackdevil fish ( Melanocetus johnsonii ) are quintessential monsters from the deep . The female lurks in the dark, drawing in prey with her glowing lure, while the male attaches to her like a blood-...
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