Species: Ctenogobius sagittula, Lancetail goby, Longtail goby
Ctenogobius sagittula (Günther, 1861)
Lancetail goby, Longtail goby
Elongate, compressed body; head short, depressed, cheeks bulbous, snout blunt; eyes large, towards front, narrow between them; 2 pores behind eye, last one above preopercle; an oblique row of papillae posteriorly on operculum; mouth horizontal, large, slightly underneath snout; teeth in several rows on each jaw, inner row of top row much larger, curved, 1-2 large canines near front of lower jaw; no gill rakers on upper first gill arch, one triangular raker at the angle of the arch and 3-4 triangular rakers on the lower arch; dorsal fin VI + I, 13 (rarely 12, 14 or 15); I, 14 (rarely 13 or 15) anal rays; 1 more ray on 2nd dorsal fin than anal fin; pelvics fused to form disc; tail fin long and pointed; body with rough scales, 55-65 in lateral series; predorsal scales extending forward to level of middle of opercle, but scales absent on mid- dorsal line, anterior to dorsal fin origin, remainder of head scaleless.
Head & body light tan; body with 4 dark brown blotches along middle of side and dark brown spot at middle of caudal fin base; a brown stripe on cheek and brown blotch just behind on center of gill cover; a dark blotch on side of nape above pectoral fin base; second dorsal and caudal fin with brown spots.
Size: to at least 20 cm.
Inhabits sand or mud bottoms of shallow bays and estuaries.
Depth: 0-5 m.
California to the Gulf of California to northern Peru.
High Resolution Map Download
- Salinity
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- Brackish
- Non Marine
- Freshwater
- Inshore/Offshore
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- Inshore
- Inshore Only
- Water Column Position
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- Bottom only
- Bottom
- Habitat
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- Sand & gravel
- Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
- Mud
- Estuary
- Soft bottom only
- Mangrove
- FishBase Habitat
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- Demersal
- Feeding Group
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- Herbivore
- Data
- Diet
-
- Data
- Benthic microalgae
- Egg Type
-
- No data
- Benthic
- Pelagic larva
- Global Endemism
-
- All species
- East Pacific endemic
- Tropical Eastern Pacific (TEP) endemic
- Regional Endemism
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- Continental TEP endemic
- Continent
- 3 provinces (Cortez + Mexican + Panamic) endemic
- All species
- Continent only
- TEP endemic
- Residency
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- Resident
- Climate Zone
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- Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
- North Temperate (Californian Province &/or Northern Gulf of California)
- Northern Subtropical (Cortez Province + Sinaloan Gap)
- Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
- IUCN Red List
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- Listed
- Least concern
- CITES
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- Not listed
- Depth Range Min
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- 0
- Depth Range Max
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- 5
- Length Max
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- 20
