- Types:
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holocephalan, holocephalian
fish with high compressed head and a body tapering off into a long tail
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elasmobranch, selachian
any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates
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chimaera
a deep-sea fish with a tapering body, smooth skin, and long threadlike tail
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shark
any of numerous elongate mostly marine carnivorous fishes with heterocercal caudal fins and tough skin covered with small toothlike scales
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ray
cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
