Hydrolagus colliei, Spotted ratfish : aquarium

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Hydrolagus colliei (Lay & Bennett, 1839)

Spotted ratfish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Hydrolagus colliei   AquaMaps   Data sources: GBIF OBIS
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Image of Hydrolagus colliei (Spotted ratfish)
Hydrolagus colliei
Picture by Nichols, J.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Holocephali (chimeren) (chimaeras) > Chimaeriformes (Chimaeras) > Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors. (See ETYFish);  colliei: In honor of Alexander Collie (1793‒1835), Scottish surgeon-naturalist aboard HMS Blossom, from which holotype was collected; his notes formed the basis of Lay & Bennett’s description. (See ETYFish).
More on authors: Lay & Bennett.

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien bathydemersaal; diepte 0 - 913 m (Ref. 6793), usually 50 - 400 m (Ref. 43939). Temperate; 59°N - 8°N, 141°W - 83°W

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Northeastern Pacific: west coast of North America from southwestern Alaska to Baja California, Mexico, including the Gulf of California, and Costa Rica.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm ?, range 19 - ? cm
Max length : 100.0 cm TL mannelijk / geslacht onbekend; (Ref. 96339)

Korte beschrijving Morfologie | Morfometrie

This species is distinguished by the following characters: short and bluntly rounded snout; oral and preopercular lateral line canals not sharing a short common branch from the infraorbital canal; anterior edge of dorsal-fin spine non-serrated; anterior and posterior regions of second dorsal-fin considerably taller than the middle region; pectoral fins when depressed do not reach beyond to origin of pelvic fins; no anal fin; caudal-fin axis horizontal with the fin nearly symmetrical, epaxial and hypaxial lobes equal sized; coloration brown or reddish brown with small white spots on head and trunk (Ref. 97389).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Found near the bottom, from close inshore to about 913 m (Ref. 2850). Abundant in cold waters at moderate depths. Feed on mollusks, crustaceans and fishes (Ref. 37955); also echinoderms and worms (Ref. 28499). The spine can be dangerous and cause a painful wound (Ref. 2850). Fishers are reputed to fear the jaws of the ratfish more than they do the dorsal spine. Its flesh is edible but bland and leaves an unpleasant aftertaste (Ref. 28499). The liver was used as a source of machine oil (Ref. 28499).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Distinct pairing during copulation (Ref. 205). The female extrudes two eggs at a time (each contained in a capsule) and may take up to 30 hours to extrude all her egg cases, which then hang from her body on a long filament for another 4 to 6 days. The egg cases end up planted vertically in the mud or just lying with filaments entangled on the bottom. Females extruding egss can be found year-round (Ref. 28499).

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Allen, M.J. and G.B. Smith, 1988. Atlas and zoogeography of common fishes in the Bering Sea and northeastern Pacific. NOAA Tech. Rep. NMFS 66, 151 p. (Ref. 6793)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Niet bedreigd (LC) ; Date assessed: 05 December 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Traumatogenic (Ref. 4690)





Gebruik door de mens

Visserij: van geen belang; Aquarium: Publieke aquaria
FAO - visserij: aanvoer; Publication: search | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 123201): 5.1 - 9.7, mean 7.5 °C (based on 115 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00118 - 0.00673), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.7   ±0.54 se; based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (K=0.2-0.22; Fec=2).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (52 of 100).
Climate Vulnerability (Ref. 125649):  Moderate to high vulnerability (47 of 100).
Nutrients (Ref. 124155):  Calcium = 14.2 [4.5, 42.2] mg/100g; Iron = 0.301 [0.111, 1.177] mg/100g; Protein = 16.7 [11.1, 19.8] %; Omega3 = 0.508 [0.213, 1.200] g/100g; Selenium = 20.8 [4.5, 56.4] μg/100g; VitaminA = 7.5 [2.3, 24.5] μg/100g; Zinc = 0.38 [0.19, 0.70] mg/100g (wet weight);