Bythitoidei

 ( Ophidiiformes ) 

Bythitoidei is a suborder of the order Ophidiiformes, the cusk eels. They are distinguished from the other Ophidiform suborder, the Ophidioidei, by being largely vivipary.

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Families The following families make up the suborder Bythitoidei:

• Family Bythitidae Theodore Gill, 1861 — viviparous brotulas
• Family Aphyonidae Jordan & Evermann, 1898 —aphyonids, blind cusk-eel
• Family Parabrotulidae Nielsen, 1968 — false brotulas

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