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Species: Ctenogobius shufeldti, Freshwater Goby

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flank: 4 dark rectangular blotches
D2 11; A 12
corner mouth to mid-preopercle: oblique bar
lower opercle dark blotch
nape: 7 smooth scales

Ctenogobius shufeldti (Jordan & Eigenmann, 1887)

Freshwater Goby

Elongate, compressed body; snout round; eyes large, towards front, narrow between them; a broad low keel on nape in front of dorsal fin; mouth slightly oblique, opens at front, lower jaw slightly included inside upper jaw when mouth is closed; teeth in several rows on each jaw, inner row of top row much larger, curved, outer teeth slightly enlarged, and recurved in male; lower jaw with large recurved canines in outer mid-lateral row; front of roof of mouth without teeth; gill rakers short, triangular 0 + 4-5; gill membranes broadly joined to body under throat, with 5 rays; dorsal fin VI (none elongate) + I, 11 (rarely 10 or 12); length of 2nd dorsal base > distance from 2nd dorsal base to tail fin; anal fin I, 12 (rarely 11 or 13); pectoral fins 17-18; pelvic fins I, 5, fused to form a disc; tail fin long and pointed; body with rough scales, except 7 partly imbedded smooth scales on nape before dorsal fin; 35-40 longitudinal scales; no lateral line.

Pale tan to translucent; a dark stripe from corner of mouth to center of preopercle; preoperculum edge not distinctly darker; lower corner of operculum with a dark blotch; 5 rectangular dark blotches along mid-flank; pelvic fins of male with a dark streak along each innermost ray, fin plain in female; dorsal fins with oblique dotted bars; tail fin with ~6 wavy indistinct bars.

Reaches 10.7 cm.

Lives in low salinity upper estuarine marshes; also in freshwater.

Depth range: 0-5 m.

N Carolina to the SW Gulf of Mexico; the southern Caribbean to Brazil.

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  • Brackish
  • Freshwater
  • Non Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Estuary
  • Freshwater
  • Mud
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Detritivore
  • Omnivore
  • Data
  • Benthic microalgae
  • Detritus
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Extends South of GC
  • Continent
  • Continent only
  • Extends North of GC
  • 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
  • 10.7
Depth Range Min
  • 0
Depth Range Max
  • 5