Colorful fish swim in blue water.

an adult and baby coelacanth specimens on display

Meet the Coelacanth

Learn about the fish that was once thought to be extinct.

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Featured Content

Clever Measures Track Fishing Pressures

A Honduran small-scale fisherman on a boat setting out to fish.

August 2018

Tough Teeth and Parrotfish Poop

A blue parrotfish hides among coral.

March 2018

Fish Get Risky Around Oil

On coral reefs fish are important links in the food chain that sustains higher-order predators (including humans) and keeps everything in balance.

September 2017

Why the Littlest Fish Matter a Whole Lot

A tornado of sardines swirls around diver and photographer Erwin Poliakoff in the Philippines.

May 2015

Following the Akule

A school of akule (Hawaiian for bigeye scad) explode into a camera's frame.

August 2015

Are You An Educator?

At Smithsonian Ocean, we have lesson plans, activities, and resources to help you engage your students in the wonders of our oceans.

see all lesson plans see fish lesson plans

Fish Articles

Scientists Call New Eel Species A Living Fossil

A photo of a swimming Protanguilla palau, the newly discovered genus and species of eel

August 2011

Colorful Christmas tree worms

Slideshow

Happy Holidays from the Ocean!

Medidas Inteligentes Rastrea las Presiones de Pesca

Un pescador de una pesquería a pequeña escala de Honduras se embarca en una excursión de pesca.

August 2018

Why the Littlest Fish Matter a Whole Lot

A tornado of sardines swirls around diver and photographer Erwin Poliakoff in the Philippines.

May 2015

Where the Shark and the Snapper Roam

Grey reef sharks are among the most versatile and tough predators on a Pacific coral reef, but they are also among the most vulnerable species, as they are threatened by wasteful fishing practices like shark finning.

March 2014

Screenshot of "Sea Creatures from the Deep" video showing the teeth of an anglerfish.

Video

Sea Creatures from the Deep: A Video by National Geographic and the Census of Marine Life

Tough Teeth and Parrotfish Poop

A blue parrotfish hides among coral.

March 2018

The Incredible Diversity of Fish: How Form Equals Function

a trigger fish swims around a coral reef

April 2025

Rough Going for Orange Roughy

Orange roughy and various marine species, bycatch, on the deck of a research trawler

July 2011

Tunas and Marlins Officially Classified as Threatened

An underwater photo of Southern Bluefin Tuna swimming above a fish farm net.

July 2011

The Blue Halo – Barbuda and Beyond

A Barbudan fisherman with a fresh lobster catch!

August 2015

Fish Heart Out of Water

A green mahi-mahi fish underwater

June 2018