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Species: Enneanectes exsul, Island triplefin

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nasal bone: row small spines
body: 5 brown bars + mottling
C brown + 2 white bars
inner pectoral base - large scale
opercle scaled; inner pectoral base - large scale
large scales above LL

Enneanectes exsul Rosenblatt et al, 2013

Island triplefin

Head broad, body robust; a well developed cirrus over eye, no cirri on nape;  bone bearing nostrils with a row of small spines; no teeth on sides of roof of mouth; top of head and upper opercular margin spiny; 3 dorsal fins: III + XIII + 8-9, 1-4 soft rays branched; anal soft rays 15-16; pectoral 15 (14-16); pelvics I (imbedded), 2; scales medium to large, 29-30 in longitudinal series; body scales rough, except smooth on side of belly; head scaleless except small patch of rough scales on opercle; large scale covering upper 2/3 of inner base of pectoral; scales of 1st  row above lateral line much larger than those in 2nd  row; lateral line in 2 straight, slightly overlapping sections, scales on front part pored (14-16), those on rear part notched (17-19).

Body with 5 brown irregular bars, and another on tail base; head heavily mottled with brown, and with several brown bars down from eye; 1st dorsal whitish with brown spots; 2nd dorsal with large brown blotch at front, brown and white mottling behind; 3rd dorsal with brown and white diagonal barring; tail fin brown, with a white basal bar and white rear edge; anal and pectoral fins with brown and cream alternating bars.

Size: 3 cm.

Habitat: rocky shores.

Depth: 0-5 m.

Endemic to the Revillagigedo Islands, Mexico.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom only
  • Bottom
  • Rocks
  • Reef (rock/coral/oyster)
  • Reef only
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • No Data
  • No Data
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • No data
  • Pelagic larva
  • Benthic
Global Endemism
  • All species
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • TEP oceanic island (s) endemic
  • All species
  • Revillagigedo Islands endemic
  • Island (s)
  • Island (s) only
  • TEP endemic
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 3
Depth Range Min
  • 0
Depth Range Max
  • 5