Synaphobranchus is a genus of in the cutthroat eel family, Synaphobranchidae. It currently contains the following species:
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Synaphobranchus affinis Günther, 1877 (Grey cutthroat eel)
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Synaphobranchus brevidorsalis Günther, 1887 (Shortdorsal cutthroat eel)
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Synaphobranchus calvus M. R. S. de Melo, 2007
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Synaphobranchus dolichorhynchus (E. H. M. Lea, 1913)
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Synaphobranchus kaupii J. Y. Johnson, 1862 (Kaup's arrowtooth eel)
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Synaphobranchus oregoni Castle, 1960
