Shorefishes of the Eastern Pacific online information system

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Species: Tylosurus crocodilus fodiator, Crocodile needlefish, Hound needlefish, Mexican needlefish, the Houndfish

All Families:   All Genera:   All Species:

beak short
D 18-22; A 17-18
C concave
pectoral long

Tylosurus crocodilus fodiator Jordan & Gilbert, 1882

Crocodile needlefish, Hound needlefish, Houndfish, Mexican needlefish

Relatively robust; beak relatively short, stout and straight; dorsal rays 18-22 (usually 20); anal rays 17-18 (usually 18); front lobes of dorsal + anal fin relatively high; pectoral rays 14 or 15; pectoral + pelvic fins relatively long; tail fin with concave to slightly forked rear edge, lower lobe longer than upper lobe; a prominent raised keel on side of tail base; 320-361 scales before dorsal fin.

Dark bluish green above, silvery on sides; keel on tail base black

Size: to 125cm.

Habitat: inshore, pelagic surface.

Depth: 0-10 m?

Circumtropical, with a subspecies endemic to our region: Baja, the Gulf of California to Ecuador, Galapagos, Cocos and Malpelo.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Surface
  • Water column only
  • Water column
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Pelagic
Feeding Group
  • Carnivore
  • Data
  • Data
  • Octopus/squid/cuttlefish
  • Pelagic crustacea
  • Bony fishes
Egg Type
  • No data
  • Pelagic larva
  • Benthic
Global Endemism
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
  • All species
Regional Endemism
  • TEP endemic
  • Continent + Island (s)
  • All species
  • Island (s)
  • Continent
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • North Temperate (Californian Province &/or Northern Gulf of California)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 125
Depth Range Min
  • 0
Depth Range Max
  • 10