Actinopteri (ray-finned fishes) > Perciformes/Cottoidei
(Sculpins) > Liparidae
Etymology: Allocareproctus: Greek, allos = other + Greek, kara, kare = face + Greek, proktos = anus (Ref. 45335); tanix: Name derived from the Aleut word 'tanix' meaning forehead, referring to the absence of nasal papillae on the pale head; noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 104 - 620 m (Ref. 57077). Deep-water
North Pacific: Eastern and central Aleutian Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.8 cm SL (female)
Morphology | Morphometrics
Diagnosis: Teeth are strongly trilobed; nasal papilla absent; other pore papillae are reduced, invariably present only on maxillary pore 6; peritoneum pale; orobuccal valve with 1 finger-like projection; orobuccal cavity pale; gill rakers 9-10, short and blunt; interorbital papilla absent; pyloric caeca on left side, short; body peach to red; iris golden (Ref. 57077).
Smallest female with yolked eggs measured 7.76 cm SL; smallest male with enlarged, swollen testes 6.38 cm SL (Ref. 57077).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Orr, J.W. and M.S. Busby, 2006. Revision of the snailfish genus Allocareproctus Pitruk & Fedorov (Teleostei: Liparidae), with descriptions of four new species from the Aleutian Islands. Zootaxa 1173:1-37. (Ref. 57077)
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
): 1.6 - 4.2, mean 3.8 °C (based on 19 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), 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
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).