Actinopteri (ray-finned fishes) > Ophidiiformes
(Cusk eels) > Dinematichthyidae
Etymology: Alionematichthys: Name from Latin alius meaning the other or different, and nematichthys, the stem of the genus name Dinematichthys, to which this genus is most similar.. More on authors: Sedor & Cohen.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 9 m (Ref. 34024). Tropical
Western Central Atlantic: Bay Islands, Honduras. Record from Taiwan needs further confirmation (Ref. 43544).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.8 cm SL male/unsexed; (Ref. 43544); 5.2 cm SL (female)
Morphology | Morphometrics
soft rays: 55 - 61;
Vertebrae: 39 - 40. This species is distinguished by the following characters: ; D 71-79; A 55-61; small eyes (1.5-2.3%SL); rounded snout, no cirri; cheeks with scales; with upper preopercular pore; outer pseudoclasper broad-based, simple flap-shaped, about twice as large as the inner one which is very short and its margin almost straight from short anterior pointed lobe to posterior lobe; very wide isthmus between pseudoclaspers; otolith length to height 2.2-2.3, with regular dorsal rim; otolith length to sulcus length 1.6, ostium length to cauda length about 3.5-4.0; vertebrae 10-11 + 29-30 = 39-40 (Ref. 81230).
Uncommon species (Ref. 34024).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Nielsen, J.G., D.M. Cohen, D.F. Markle and C.R. Robins, 1999. Ophidiiform fishes of the world (Order Ophidiiformes). An annotated and illustrated catalogue of pearlfishes, cusk-eels, brotulas and other ophidiiform fishes known to date. FAO Fish. Synop. 125(18):178p. Rome: FAO. (Ref. 34024)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 27.3 - 28.4, mean 27.9 °C (based on 180 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming Fec < 100).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .