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This rarely seen smalleyed rabbitfish, belongs to the order Chimaera. Chimaeras are related to sharks and are cartilaginous animals—they have no real bones.
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Chimaera from the Deep

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Fish spears and traps placed in rivers are traditional ways of catching salmon.
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Catching Salmon

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An underwater photo of a school of jacks and a scuba diver
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Bigeye Jacks and Diver Balicasag, Philippines

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The Eastern cleaner clingfish cleans parasites off of larger fish.
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The Eastern Cleaner Clingfish

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In some reefs, small fishes such as this broad-barred goby protect corals by eating invading seaweeds.
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Coral Goby Cleans Coral

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Photograph of a bright yellow fish.
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Tagged Atlantic Cod

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An image of collections storage at the Smithsonian National Museum of Natural History.
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Smithsonian Fish Collections

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A blenny fish against both a white and black backdrop, where you can see its beautiful color pattern.
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A New Fish DROP-ping In

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A pearlfish, which lives in the orange sea cucumber's anus, emerges to feed.
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Pearlfish from a Sea Cucumber

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an old illustration of an eel
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The Origin of Eels

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Tropical hatchetfish, like the one shown in this X-ray photograph, live in the dark depths of the ocean. Like many other deep-sea fishes, they have large eyes and bioluminescent spots on their bellies.
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X-Ray Image of a Tropical Hatchetfish

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A school of grooved razorfish seen in x-ray imaging.
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X-Ray Image of Grooved Razorfish

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