Shorefishes of the Eastern Pacific online information system

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Species: Microgobius urraca, Dark-finned sand goby

All Families:   All Genera:   All Species:

pale grey + faint pale bars
C - dark + 2 white stripes
lateral scales 67-76
no rough scales under pectoral
D1 oval dark blotch

Microgobius urraca Tornabene, van Tassell & Robertson, 2012

Dark-finned Sand Goby

Head and body compressed; no obvious fleshy crest on nape; eye small (22.3% of SL); 2-3 pores on preopercle; mouth large, strongly oblique; tip of tongue divided; dorsal fin VII (none elongate) + I, 14 rays; anal I, 14 rays; pectoral 21-22; tail fin long, oval, pointed; pelvics fused to form disc joined across the front by a smooth ridge; scales small, 67-76 along side, smooth; body scaled from rear forward to tip of depressed pectoral fin, rest of body & head scaleless; no patch of rough scales beneath pectoral fin.

Head and body greyish, with a series of faint pale bars on front part of body; dorsal, and anal fins darker grey; 1st dorsal fin with a dark, oval blotch; tail fin dark, with two central blue-white stripes and another above those, a blue white stripe along center of 2nd dorsal fin.

Size: reaches at least 9.5 cm.

Habitat - sand and gravel.

Depth range 12-20 m.

Known only from the Gulf of Chiriqui and the Azuero Peninsula of Panama.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom only
  • Bottom
  • Soft bottom only
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Demersal
Feeding Group
  • Planktivore
  • No Data
  • Carnivore
  • Zooplankton
  • Pelagic fish eggs
  • No Data
Egg Type
  • Pelagic larva
  • Benthic
  • No data
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
  • All species
Regional Endemism
  • Continent
  • Continental TEP endemic
  • Continent only
  • TEP endemic
  • Panamic province endemic
  • All species
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 9.5
Depth Range Min
  • 10
Depth Range Max
  • 20