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Species: Gobiosoma bosc, Naked goby

All Families:   All Genera:   All Species:

tiny barbel before eye
pores: opercle 2; preopercle 3
D2 I, 12; A 10; pectoral 18
brown + ~9 thin light bars
pelvic disc round
no scales

Gobiosoma bosc (Lacepede, 1800)

Naked goby

Body robust; head rounded, broader than deep; snout blunt; a very small barbel at front of eye; anterior nostril a short tube, posterior a raised rim; 1 pore between eyes; usually 2 pores over gill cover; 3 preopercular pores; upper lip separated from snout by a groove along its top edge; tongue rounded; 3-4 rows of teeth in both jaws, outer row of teeth enlarged in upper and lower jaws; no teeth on  roof of mouth; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VII (spines not elongate) + I, 12 (10-13); length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 10 (9-11); pectoral fin 18 (16-19), rounded; pelvic I, 5 all rays branched, disk round, extending 1/2 way or slightly more to anus; tail fin with segmented rays 17 (17-18), rounded; head and body without scales; no lateral line.

Body and fins brown, with ~9 thin light, generally straight, bars that extend onto the dorsal fins, the broad brown interspaces uniformly pigmented, or with short dark horizontal lines; occasionally uniformly pigmented either light or very dark all over.

Size: 6.0 cm.

Habitat: A coastal species generally found in salinities between 0.3o/oo to 24.7o/oo; frequently associated with oyster beds, also in grass beds, rocky areas, sea squirts, and marsh pools.

Depth: 0-10 m.

Massachusetts to the NW Gulf of Mexico. One specimen reported from Venezuela; perhaps arriving there in a ship’s ballast water.

Notes: Generally confused with G. robustum, G. longipala and G. ginsburgi. The latter two possess two large very rough scales on the posterior of the tail. In G. robustum the vertical bars are less distinct and not as straight is in G. bosc, the pelvic fins are longer, the dorsal and anal fin rays are 12 and 10 respectively instead of 13 and 11, and the posterior cephalic pores are generally lacking.


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Salinity
  • Freshwater
  • Non Marine
  • Brackish
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
Habitat
  • Rocks
  • Estuary
  • Submerged vegetation
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Freshwater
  • Reef and soft bottom
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
Diet
  • Mobile benthic crustacea (shrimps/crabs)
  • Insects
  • Mobile benthic worms
Egg Type
  • Data
  • Benthic
  • Pelagic larva
Global Endemism
  • West Atlantic Endemic
  • Greater Caribbean non-endemic
Regional Endemism
  • Extends North of GC
  • Continent
  • GC non-endemic
  • Continent only
Residency
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Not evaluated / Listed
CITES
  • Not listed
Length Max
  • 6
Depth Range Min
  • 0
Depth Range Max
  • 10