ratfish

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ratfish:

see chimaerachimaera
, cartilaginous marine fish, related to the sharks. Also called ratfishes, chimaeras are found in temperate oceans throughout the world, mostly in deep water. They have large heads, long, thin, ratlike tails, and large, fanlike pectoral fins.
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ratfish

[′rat‚fish]
(vertebrate zoology)
The common name for members of the chondrichthyan order Chimaeriformes.
References in periodicals archive ?
The specimens share several features with living ratfishes, which means that these skull features have been conserved in the group for the last 300 million years.