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Tylosurus crocodilus (Péron & Lesueur, 1821)

Hound needlefish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Tylosurus crocodilus   AquaMaps   Data sources: GBIF OBIS
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Tylosurus crocodilus
Picture by Baur, J.-C.


United States (contiguous states) country information

Common names: 'aha, Auau, Crocodile longtom
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Museum: USNM 30151 (Holotype, Pensacola, Florida, USA) (Ref. 7251). Occurrence in Chesapeake Bay: common over grass flats in the lower bay but extend as far north in the bay as the lowest Susquehanna River basin (Ref. 93252).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Robins, C.R. and G.C. Ray, 1986
National Database:

Common names from other countries

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

> Beloniformes (Needle fishes) > Belonidae (Needlefishes)
Etymology: Tylosurus: Greek, tylos = callus + Greek, oura = tail (Ref. 45335).
  More on authors: Péron & Lesueur.

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

marien rifbewoner; oceanodroom (Ref. 51243); diepte 0 - 13 m (Ref. 58302).   Tropical; 26°C - 29°C (Ref. 4959); 21°N - 1°N

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri

Indo-West Pacific: Red Sea and South Africa (Ref. 5317) and Persian Gulf (Ref. 68964) to French Polynesia (Ref. 6784), north to Japan (Ref. 559), south to New South Wales, Australia (Ref. 33390). Replaced by Tylosurus crocodilus fodiator in the eastern Pacific. Western Atlantic: New Jersey, USA to Brazil (Ref. 7251). Eastern Atlantic: Fernando Poo, Cameroon, Liberia, and Ascension Island (Ref. 5757); from Senegal and Guinea (Ref. 28587); and Cape Verde (Ref. 27000). Recorded from the Mediterranean Sea (Ref. 83387).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm 51.7, range 50 - 55 cm
Max length : 150 cm TL mannelijk / geslacht onbekend; (Ref. 30573); common length : 90.0 cm SL mannelijk / geslacht onbekend; (Ref. 9682); max. gepubliceerd gewicht: 6.4 kg (Ref. 40637)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 21-24; Anale stekels 0; Anale zachte stralen: 19 - 22; Wervels: 75 - 80. This species with is distinguished by the following characters: body elongate, circular in cross-section; D 21-24 with anterior rays forming a relatively high lobe, 5.4-10.6 body length (excluding the head and caudal fin); dorsal fin origin about equal with or slightly in front to anal fin origin; A 19-22 with anterior rays forming a relatively high lobe, in 5.5-8.0 in BL; pectoral-fin rays 13 to 15 (usually 14 or 15); 270-340 predorsal scales; 75-80 vertebrae; jaws extremely long, forming a stout beak armed with very sharp teeth; no gill rakers absent; caudal fin deeply emarginate, the lower lobe much longer than the upper one and the caudal peduncle with a distinct, black lateral keel; body colour dark bluish green above, silvery below; juveniles (to 20 cm body length) with elevated black lobe in posterior part of dorsal fin which is lost with growth; scales and bones green (Ref. 9682, 90102).

Biologie     Verklarende woordenlijst (bv. epibenthic)

A pelagic species (Ref. 26340) found over lagoon and seaward reefs. Solitary or in small groups. Feeds on fishes (Ref. 11889). Oviparous (Ref. 205). Eggs may be found attached to objects in the water by tendrils on the egg's surface (Ref. 205). Feared by fishers because they can cause puncture wounds with their sharp snouts when jumping out of the water, e.g. when alarmed or attracted to lights at night. Although sold fresh and considered a good food fish, its market is limited due to the green-colored flesh (Ref. 5217). Widespread in tropical Indo-Pacific, divisible in two subspecies (Ref 90102). Caught by casting or trolling surface or near-surface lures; also with purse seines and drift nets (Ref. 9682).

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

Hoofdreferentie Upload your references | Referenties | Coördinator : Collette, Bruce B. | Medewerkers

Randall, J.E., G.R. Allen and R.C. Steene, 1990. Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p. (Ref. 2334)

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

  Niet bedreigd (LC) ; Date assessed: 21 August 2012

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Traumatogenic (Ref. 4690)




Gebruik door de mens

Visserij: commercieel; sportvis: ja
FAO(visserij: productie; publication : search) | FishSource | Sea Around Us

Meer informatie

Lokale namen
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Estimates based on models

Preferred temperature (Ref. 115969): 27.1 - 29.2, mean 28.5 (based on 1591 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00093 (0.00058 - 0.00150), b=3.14 (3.01 - 3.27), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisch niveau (Ref. 69278):  4.4   ±0.4 se; based on diet studies.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Prior r = 0.57, 95% CL = 0.38 - 0.86, Based on 1 stock assessment.
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (47 of 100).
Climate Vulnerability (Ref. 125649):  Very high vulnerability (91 of 100).
Prijsklasse (Ref. 80766):   Medium.