Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Synaphobranchidae
(Cutthroat eels) > Synaphobranchinae
Etymology: Synaphobranchus: Greek, syn, symphysis = grown together + Greek, aphoo, aphiemi = to throw + Greek, brangchia = gill (Ref. 45335).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 900 - 3000 m (Ref. 26895), usually 1000 - 2500 m (Ref. 58302). Deep-water; 2°C - 11°C (Ref. 26895); 37°N - 29°S
Circumtropical, except the northeast Pacific (Ref. 26895). Indo-Pacific: Zanzibar and Maldives, Japan and Australia (Ref. 7300). Western Central Atlantic: Gulf of Mexico and off Suriname (Ref. 13608).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 111 cm TL male/unsexed; (Ref. 26895)
A benthic species (Ref. 75154) found on the continental slope (Ref. 7300, 75154).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sulak, K.J. and Y.N. Shcherbachev, 1997. Zoogeography and systematics of six deep-living genera of synaphobranchid eels, with a key to taxa and description of two new species of Ilyophis. Bull. Mar. Sci. 60(3):1158-1194. (Ref. 26895)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 1.9 - 4.7, mean 2.8 °C (based on 3258 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00071 (0.00031 - 0.00164), b=3.12 (2.91 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming fecundity > 100).
Fishing Vulnerability (Ref. 59153
): High to very high vulnerability (67 of 100).