Species: Gobiosoma seminudum, Silt goby, Tidal goby
dark + irregular oblique white bars
male all dark, D1 white edge
Gobiosoma seminudum (Günther, 1861)
Silt goby, Tidal goby
Body robust; head broader than deep, cheeks swollen; a pair of thick barbels under chin, 1 prominent barbel under front nostril, a pair of barbells at tip of snout; pore between front edges of eyes, 2 pores above opercle, pores on preopercle; both nostrils tubular; teeth in bands, with some canines, none on sides of roof of mouth; tongue with round tip; gill opening restricted to vertical opening as long as width of pectoral fin base; dorsal fin VII + I, 13-14, 2nd long based, low membrane joins two fins; anal I, 9-11; pelvics fused in disc that has smooth front edge; tail round, with 17 segmented rays; scales small (33-59 along side), smooth, present behind level of inner pectoral base; 2 very rough scales at base of tail fin; head, breast & belly scaleless.
Dark grey, with ~ 4 irregular wide, oblique white bars and spots on body; a series of dark dashes along mid-flank ;white blotch on the pectoral base, with a dark crescent at the base of the fin; head with pale bars under and before eye, and a pale bar back from eye; first dorsal blackish, with white spots on base; second dorsal with ~ 3 dark stripes and a dark margin; tail fin with ~ 4 blackish bars. Male can be all brown, with white submarginal stripes on the dorsal fins.
Size: 4.5 cm.
Habitat: rocky and mangrove tidepools; rock, shell and mud bottoms.
Depth: 0-5 m.
E Gulf of California to Colombia.
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
- Bottom only
- Habitat
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- Soft bottom only
- Mud
- Sand & gravel
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- FishBase Habitat
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- Demersal
- Feeding Group
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- Carnivore
- No Data
- Diet
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- Mobile benthic gastropods/bivalves
- No Data
- Mobile benthic worms
- Mobile benthic crustacea (shrimps/crabs)
- Egg Type
-
- No data
- Pelagic larva
- Benthic
- Global Endemism
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- All species
- East Pacific endemic
- Tropical Eastern Pacific (TEP) endemic
- Regional Endemism
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- Continent
- 3 provinces (Cortez + Mexican + Panamic) endemic
- All species
- TEP endemic
- Continent only
- Continental TEP endemic
- Residency
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- Resident
- Climate Zone
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- Northern Subtropical (Cortez Province + Sinaloan Gap)
- Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
- Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
- IUCN Red List
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- Not evaluated / Listed
- CITES
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- Not listed
- Length Max
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- 4.5
- Depth Range Min
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- 0
- Depth Range Max
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- 5
