lampriformes

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Opah

(Lampris guttatus)

Also known as the moonfish or Jerusalem haddock, the opah is a large species of pelagic fish found worldwide. L.guttatus is a fairly large species of fish with adults growing up to 6 feet long and weighing in at 600 lb. Opahs spend their entire lives in the open ocean at depths ranging from 200-2000 feet deep, they are usually solitary animals but are known to school with Scrombids (tuna and allies). Like most pelagic fish they have a diet of mostly squid and krill. Their scientific name means spotted in Latin referring to the fish’s spotted body.

Phylogeny

Animalia-Chordata-Actinopterygii-Lampriformes-Lampridae-Lampris-guttatus

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Unicorn Crestfish (Eumecichthys fiski)

Also known as the unicornfish, the unicorn crestfish is a rare species of crestfish that likely has a worldwide distribution but has only been seen offshore of Kalk Bay in South Africa. They have also been reported in the Sea of Japan, Florida, Hawaii, Mexico and India.

Unicornfish inhabit the bathypelagic zone and are typically seen at depths of around 3,000 ft. Like a couple other lampriform genera members of Eumecichthys possess an ink tube which allows them expel a black fluid from their cloaca in defense. Unicorn crestfish are very rare and much is still unknown about their biology and ecology.

Phylogeny

Animalia-Chordata-Actinopterygii-Lampriformes-Lophotidae-Eumecichthys-E.fiski

Image(s): Eric Woroch

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Family Trachipteridae

(Ribbonfish)

are a family of lamprid fish found in deep waters worldwide. They get the name ribbonfish due to their thin almost ribbon-like body and thin fins. Due to their deep sea lifestyle and brittle anatomy that comes with that they are rarely seen alive at the surface. however species around the coast of Taiwan are known as earthquake fish as they are believed to appear before an earthquake.

Phylogeny

Animalia-Chordata-Actinopterygii-Lampriformes-Trachipteridae

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