Species: Gobiosoma grosvenori, Rockcut Goby
pores: opercle 2, preopercle 3
9 broad dark bars with dark central dashes

Gobiosoma grosvenori (Robins, 1964)
Rockcut Goby
Body robust; head rounded, broader than deep, somewhat depressed; snout blunt; anterior nostril a short tube, posterior a raised rim; 1 pore between eyes; 2 pores over opercle; 3 preopercular pores;mouth small, a little under snout; upper lip separated from snout by a groove along its top edge; teeth in 4 rows in upper jaw, 3 in lower jaw, outer row of teeth enlarged in upper and lower; no teeth on roof of mouth; tongue truncate to slightly bilobed; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VII (none filamentous) + I, 9; length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 8 (7-8); pectoral fin 17 (16-18) elongate reaching to origin of 2nd dorsal fin; pelvic I, 5, fins almost completely separate, shape elongate, anterior membrane of fin very small, fin extends ¾ distance to anus; caudal fin segmented 17, rounded; scaled from tail fin base to pectoral fin, with a narrow tongue of scales on the front body; upper narrow naked area from upper pectoral fin base to origin of second dorsal fin; lower narrow naked area from lower pectoral fin base to anal-fin origin; four very rough scales at base of tail fin; scales in longitudinal series 31-35; scales easily shed; no lateral line.
Head and body pale tan; head with scattered dark dots, a diagonal thin dark bar through eye to center of top lip; a broad dark "V" or "Y" on membranes under throat; body with a series of short horizontal dashes or dots along the lateral midline, each corresponding with a dark bar, those bars separated by light thin bars, almost white on mid-trunk; top body profile with pairs of dark spots at the top of the dark body bars; dorsal fins with light and dark body bars extending onto fin base, light area in midfin and edge dark (darker in 1st dorsal); anal fin light near base, dark at outer edge; pectoral fin base with scattered melanophores and a small dark patch near the upper fin base; pelvic fin with numerous dark dots; tail fin with series of 6-7 thin vertical bars.
Size: 3.0 cm.
Habitat - Found in open shallow shore waters with scattered coral, rubble, rocks, open sandy areas and weed beds.
Depth range: 1-5 m.
Florida to the S Caribbean.

High Resolution Map Download
- Salinity
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- Brackish
- Marine
- Inshore/Offshore
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- Inshore
- Inshore Only
- Water Column Position
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- Bottom
- Habitat
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- Rocks
- Sand & gravel
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Submerged vegetation
- Estuary
- Reef (rock/coral/oyster)
- Reef and soft bottom
- Reef associated (reef + edges-water column & soft bottom)
- FishBase Habitat
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- Reef Associated
- Feeding Group
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- Carnivore
- Data
- Diet
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- Data
- Mobile benthic crustacea (shrimps/crabs)
- Mobile benthic gastropods/bivalves
- Mobile benthic worms
- Egg Type
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- Benthic
- Data
- Pelagic larva
- Global Endemism
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- All species
- Greater Caribbean endemic
- West Atlantic Endemic
- Regional Endemism
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- Continent
- Continent + Island (s)
- GC endemic
- Island (s)
- All species
- Residency
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- Resident
- Climate Zone
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- Equatorial (0-10N, Costa Rica / Venezuela)
- Subtropical (23-35N, Florida / Carolinas / Bermuda)
- Tropical (10-23N, Nicaragua / Cuba)
- IUCN Red List
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- Least concern
- Listed
- CITES
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- Not listed
- Length Max
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- 3
- Depth Range Min
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- 1
- Depth Range Max
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- 5