Shorefishes of the Eastern Pacific online information system

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Species: Bollmannia umbrosa, Dark-lipped goby, Dusky goby

All Families:   All Genera:   All Species:

D1: large dark blotch at base, spines medium
flank: 6-8 bars
C base: indistinct dark spot
top lip: black line

Bollmannia umbrosa Ginsburg, 1939

Dusky Goby, Dark-lipped Goby

Head & body compressed; body relatively slender (greatest depth 17.5-24% of SL); head rounded, elongate (> 25% of SL); eye large, 7-9.5% of SL; mouth large, very oblique; teeth in several rows; dorsal fin VII (slightly filamentous spines, longest spine (5th) reaching base of 4th-5th soft ray) + I, 12-13; anal I, 13-15; last rays of dorsal & anal reach base of tail fin; pectoral rays 23-25, reaches past origin of anal fin; pelvics fused to form disc, front margin of disc scalloped, nearly reaching anus; tail base slender (least depth 9-11% of SL, > eye diameter); tail fin long (> 30% of SL), strongly pointed; scales large (26-28 rows along body), rough; 7-9 scales before dorsal fin; 1-2 large + 1-2 small scales on upper 1/2 of opercle, several medium sized scales on upper 1/2 of preopercle & 1-2 large + several small scales on lower half; 6-8 medium sized scales on base of pectoral fin.

Color (Preserved fish): Body brownish, with 6-8 faint dark bars, first dorsal fin with large black blotch at rear half of base; upper lip with black marginal band; base of tail fin covered with faint dark spot; pelvics, anal, soft dorsal and tail fins dusky.

Size: 13 cm.

Habitat: benthic on soft bottoms.

Depth: 60-100 m.

SW and eastern Gulf of California to Peru.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Mud
  • Soft bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Planktivore
  • Carnivore
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
  • No Data
Egg Type
  • Pelagic larva
  • Benthic
  • No data
Global Endemism
  • All species
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • Continent
  • Island (s)
  • TEP endemic
  • All species
  • Continent + Island (s)
  • Resident
Climate Zone
  • South Temperate (Peruvian Province )
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Listed
  • Data deficient
  • Not listed
Length Max
  • 13
Depth Range Min
  • 60
Depth Range Max
  • 100