Teleostei (teleosts) >
Perciformes/Cottoidei (Sculpins) >
Liparidae (Snailfishes)
Etymology: Prognatholiparis: Greek, pro = in front of + gnathos = jaw + Liparis, a genus of snailfishes, referring to the protruding jaw, which distinguishes this genus from all other liparid genera.; ptychomandibularis: Name from Greek 'ptychos' = fold + Latin 'mandibula' = jaw, referring to the skin folds on the snout and along the ventral margin of the mandible..
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range ? - 455 m (Ref. 51661). Deep-water
Northeast Pacific: Seguam Pass, east of Seguam Island.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 8.8 cm SL male/unsexed; (Ref. 57784)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 37; Anal soft rays: 30; Vertebrae: 41. This species is distinguished by the following set of characters: projecting lower jaw anterior to upper jaw; distinct flaps and folds of skin on snout, upper jaw, and ventral portion of mandible; large pelvic disc 37.4% HL; slender body; depth at pectoral fin base 20.5% SL, at anal-fin origin 19.0% SL; 2-6-8-1 pattern of cephalic lateralis pores, no coronal and post coronal pores; 2 epurals that are fused at the base; autogenous hypural plates; with pleural ribs; no pseudobranchiae; no subcutaneous layer; no pyloric caeca (Ref. 57784).
Species typical of moderately deep waters. Holotype had ostracods and rocks found in its stomach (Ref. 57784). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
Orr, J.W. and M.S. Busby, 2001. Prognatholiparis ptychomandibularis, a new genus and species of the fish family Liparidae (Teleostei: Scorpaeniformes) from the Aleutian Islands, Alaska. Proc. Biol. Soc. Wash. 114(1):51-57. (Ref. 57784)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Ref.
123201): 3.7 - 4.1, mean 3.8 °C (based on 5 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00237 - 0.01161), b=3.15 (2.96 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.4 ±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).
