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Species: Gobiosoma robustum, Code Goby

All Families:   All Genera:   All Species:

tiny barbel before eye
indistinct thin dark bars
mid-flank: series of dark dots
D2 I,11: A 9; pectoral 16-17
pores: opercle 0; preopercle 3
pelvic disc round
no scales

Gobiosoma robustum Ginsburg, 1933

Code Goby

Body robust, head rounded, wider than deep; a tiny barbel before the front of they eye; 1 pore between eyes; usually no pore over gill cover; 3 preopercular pores; upper lip separated from snout by a groove along its top edge; tongue rounded; outer row of teeth in both jaws enlarged, lower jaw with some canines, none in upper jaw; no teeth on roof of mouth; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VII (rarely VI-VIII), spines not elongate + I, 11 (10-12); length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 9 (8-10); pectoral fins 16-17 (15-18), oval; pelvic fins I, 5, fused in a round disc extending ¾ distance to anus; tail fin with 16-18 branched rays, rounded; no scales; no lateral line.

Head mottled, darker on top, a dark bar from front of eye to middle of top lip, another from rear of eye to rear of top jaw; body with 9 darker bars alternating with lighter thin bars, not sharply delimited on the edges, lighter bars often incomplete, dark bars not uniformly pigmented, mottled with light and dark shades; a series of small dark spots and longitudinal streaks along mid-flank; color variable and can be very light or dark in appearance without noticeable bands; dorsal fins with body bars extending on to fins; first dorsal with 3 parallel oblique stripes; second dorsal with 3-4 thin stripes; pectoral fin dusky with a dark spot on upper pectoral fin base; anal fin dusky with a light outer edge; pelvic fin dusky; caudal fin dusky, base with 3 dark markings at upper, lower and midpoint of base, 6-7 thin vertical bands reducing in intensity posteriorly.

Size: 5.0 cm.

Habitat - Estuarine and coastal habitats.

Depth: 0-9 m.

E Florida through the Gulf of Mexico.

Notes: Very similar to Gobiosoma bosc, all characters overlap.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Rocks
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sponges
  • Estuary
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Demersal
  • Reef Associated
Feeding Group
  • Data
  • Omnivore
  • Data
  • Benthic microalgae
  • Insects
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • GC endemic
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 5
Depth Range Min
  • 0
Depth Range Max
  • 9