Actinopteri (ray-finned fishes) > Notacanthiformes
(Halosaurs and deep-sea spiny eels) > Halosauridae
Etymology: Aldrovandia: Taken from Ulisse Aldrovandi, (1522-1605), a Renaissance naturalist and physician noted by his systematic and accurate observations of plants and animals (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 2690 - 5029 m (Ref. 4448), usually - m (Ref. ). Deep-water; 0°C - ; 27°N - 5°N
Eastern Atlantic: Western Sahara and along the eastern slope of the Mid-Atlantic Ridge from 7°-5°N. Western Atlantic: off Bahamas and west of the Mid-Atlantic Ridge.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 50.8 cm TL male/unsexed; (Ref. 4448)
Morphology | Morphometrics
Insertion of the pelvic fins well in advance of the origin of the dorsal fin. Separation of palatine tooth patches on the midline and disc-like lateral line plaques (Ref. 37108). Light colored, the lower part of the head and the gill cover black, abdominal region blackish. Lining of mouth is dark (Ref. 37108).
Inhabits the abyssal depths (Ref. 4448).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Sulak, K.J., 1990. Halosauridae. p. 126-132. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4448)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 2.4 - 4.2, mean 2.7 °C (based on 276 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00087 (0.00033 - 0.00227), b=3.07 (2.84 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.50 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (30 of 100) .