Saltwater fish are the most beautiful fish in the world. They range from the majestic marlin to the funny-looking flounder, and the goliath grouper to the tiny blenny, and just about everything in between.
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The showy lionfish is a stunning beauty. But this invasive species, which was released into the wild in the 1980s, is wreaking havoc on delicate reef ecosystems worldwide.
By Wendy Bowman
Most species of the rarely seen anglerfish live up to a mile beneath the ocean, where the females lure prey with a head-dangling hook appendage and permanently fuse with male suitors. It doesn't get much stranger than that.
By Katie Carman
The swordfish's nose might look crazy weird, but these gladiators of the sea are perfectly outfitted for ocean battle.
Humuhumunukunukuapua'a, the colorful little fish with the craaaaazy long name, is Hawaii's state fish, but it wasn't always.
The blobfish is actually pretty average looking in its normal habitat.
Cuttlefish can avoid detection by holding a disguise for long periods of time.
By Amanda Onion
Could the sequel to Disney's 'Finding Nemo' increase demand for pet s and bring the decline of the exotic fish that plays the leading role?
By Chris Opfer
With its flexible, slim body, the barracuda is particularly adapted to swimming among coral reefs, which requires intricate moves through tight turns. Meet the barracuda! View pictures, watch video, read facts, explore interactives and more.
Unlike land snakes, eels are usually scaleless is although a few species can be found with tiny scales along their bodies. Meet the eel! View pictures, watch video, read facts, explore interactives and more.
For the city of Silver Spring, Md., "Shark Week" doesn't stop when the TV is off. Every year, a great white shark affectionately known as Chompie takes up residence on Discovery Communications' headquarters.