The ornate cowfish (Aracana ornata), like all cowfish, has a skeleton made of fused bones, essentially trapping it in a barely-flexible box. For this reason, these fish are typically slow movers; however, it does have an advantage: few other fish are able to eat adult cowfish.

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Jewel moray (Muraena lentiginosa)

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Viper Moray (Enchelynassa canina), particularly well known for its fierce set of teeth.

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Snowflake eel (Echidna nebulosa)

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Chain Moray (Echidna catenata)

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Banded creeping eel (Channomuraena vittata)

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Marbled reef eel (Anarchias seychellensis)

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Hardtail Moray Eel (Anarchias galapagensis)

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Moray eels are a type of fish belonging to the family Muraenidae. Perhaps one of their most interesting qualities, morays have a second jaw (think Alien), called the pharyngeal jaw, that helps them consume food. This particularly comes in handy because the size/shape of moray eel mouths make it incapable of producing the negative force that helps other types of fish suck food in. Instead, morays catch their prey with their primary jaw and the pharyngeal jaws come forward to pull the food in further, preventing escape.

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Among the most interesting predators are poisonous cone shells, which feed on vertebrates or other invertebrates (depending on the species). When Conus senses presence of its prey, a single radular tooth slides into position at the tip of the proboscis. When the proboscis strikes prey, it expels the tooth like a harpoon, and the poison tranquilizes or kills the prey at once. Some species can deliver very painful stings, and the stings of several species are lethal to humans. The venom consists of a series of toxic peptides, and each Conus species carries peptides (conotoxins) specific for the neuroreceptors of its preferred prey.

Pictured is Conus milneedwardsi, commonly known to collectors as the Glory of India.

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