Shorefishes of the Greater Caribbean online information system

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Species: Elacatinus atronasus, Blacknose Goby

All Families:   All Genera:   All Species:

snout black + long oval yellow spot
yellow stripe: top of eye to C base, often interrupted before C
lower dark stripe wide, ends as oval spot on lower C
pectoral 16

Elacatinus atronasus (Bohlke & Robins, 1968)

Blacknose Goby

Elongate; head compressed; mouth U-shaped, slightly under snout, top lip separate from snout; top jaw ends under rear border of eye; tongue short, tip truncate or slightly emarginated; males with outer row of long teeth above, two fangs at rear; lower jaw with two large fangs in inner row; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VII + I, 11 (10-11); length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 10 (9-11); pectoral fins 16 (15-17); pelvic fins I, 5, disk complete; tail rounded; no scales; no lateral line.

Snout and front of head black, with a long oval yellow spot from just before eye to near mouth; a yellow stripe from top of eye to the base of tail fin, often with a break in that stripe just before the tail fin; a lateral dark stripe, well developed and wide, from the bottom of the pectoral-fin base to lower portion of tail fin, where it forms a distinct oval black spot; top of body dusky; all fins, except tail fin, clear.

Reaches: 5.0 cm.

Habitat: vertical faces of coral ledges, with numerous holes and around undercut ledges.

Depth: 25-35 m.

The Bahamas and Cuba.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Reef only
  • Rocks
  • Corals
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Planktivore
  • Data
  • Zooplankton
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • GC endemic
  • Island (s)
  • Island (s) only
  • All species
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Endangered
  • Listed
  • Not listed
Length Max
  • 5
Depth Range Min
  • 25
Depth Range Max
  • 35