Ilyophis singularis Tashiro & Chen, 2022
Singular arrowtooth eel

Family:  Synaphobranchidae (Cutthroat eels), subfamily: Ilyophinae
Max. size:  27 cm TL (male/unsexed)
Environment:  bathydemersal; marine; depth range 1612 - 1665 m
Distribution:  Northeastern South China Sea.
Diagnosis:  Vertebrae: 116-118. This species is distinguished by the following set of characters: total vertebrae 116-118, preanal vertebrae 36 or 37; sensory pores in supraorbital series 3 (no pores above eye); sensory pores in infraorbital series 7 or 8 (2 or 3 pores behind eye); no sensory pores on frontal and supratemporal regions; body naked. Colouration: head uniformly brownish; body colour unknown due to abrasion of skin surface during collection, but likely to be uniformly brown (belly darker brown); dorsal and anal fins pale brown to dark brown, with translucent edge; caudal fin pale brown; oral cavity dark brown (Ref. 129534).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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