Species: Coryphopterus thrix, Bartail sand-goby, Bartail goby
eye: radiating lines, dots along top
pelvics: concave disc
Coryphopterus thrix Bohlke & Robins, 1960
Bartail goby
Snout profile straight; very low crest on head; head pores present, usually 1 between center of eyes, 1 pair between rear nostrils; papillae on cheek in horizontal rows; mouth small, relatively horizontal; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VI (second spine elongate) + I, 8-9; length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 9; pectoral fin 17-19; pelvic fins I, 5, fin disk shaped, joined at front, with frenum; urogenital papillae in males long, about half as long as anal spine; body covered with scales, scales large, rough, absent from head, 25-26 in lateral series; no lateral line.
Body largely unmarked, patches of small yellow to orange spots along the mid-body; upper half of eye with radiating dark lines, top of eyeball with small dark dots between those lines; often a dark bar angled down and forwards from eye to mid-side of jaw; a short rectangular dark bar in the middle half of tail fin base; pectoral-fin base usually with a large dark spot covering top half, darker in males, sometimes a fainter dark spot below that; no dark spot behind eye on upper edge of operculum.
Reaches 5 cm.
Habitat: Lives on sand around coral heads in clear water.
Depth: 2-85 m.
North Carolina to Brazil.
High Resolution Map Download
- Salinity
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- Marine
- Marine Only
- Inshore/Offshore
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- Inshore Only
- Inshore
- Water Column Position
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- Bottom
- Habitat
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- Rocks
- Sand & gravel
- Reef (rock/coral/oyster)
- Reef associated (reef + edges-water column & soft bottom)
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Reef and soft bottom
- FishBase Habitat
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- Reef Associated
- Feeding Group
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- Omnivore
- Detritivore
- Data
- Diet
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- Detritus
- Mobile benthic crustacea (shrimps/crabs)
- Data
- Benthic microalgae
- Egg Type
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- Data
- Benthic
- Pelagic larva
- Global Endemism
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- All species.
- Greater Caribbean non-endemic
- West Atlantic Endemic
- Regional Endemism
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- Also in Brazil
- Continent + Island (s)
- Island (s)
- Continent
- All species..
- GC non-endemic
- Extends South of GC
- Residency
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- Resident
- Climate Zone
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- Subtropical (23-35N, Florida / Carolinas / Bermuda)
- Tropical (10-23N, Nicaragua / Cuba)
- Equatorial (0-10N, Costa Rica / Venezuela)
- IUCN Red List
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- Vulnerable
- Listed
- CITES
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- Not listed
- Length Max
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- 5
- Depth Range Min
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- 2
- Depth Range Max
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- 85
