Shorefishes of the Eastern Pacific online information system

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Species: Ilypnus gilberti, Cheekspot goby

All Families:   All Genera:   All Species:

opercle - black blotch
chin - black
D red + white border
A black stripe
shoulder- 1 skin flap

Ilypnus gilberti (Eigenmann y Eigenmann, 1889)

Cheekspot goby

Body slender, compressed; ridge over eye expanded at rear; tongue tip in 2 lobes; mouth slightly oblique, top jaw reaches under middle of eye; shoulder girdle before base of pectoral fin with 1 (rarely 2) skin flaps; dorsal fin V (IV-VI) + I, 15-17 rays; anal fin I, 14-16 rays; pelvics form a cup, inserted under base of pectoral fin; scales very small, smooth, imbedded in skin, absent on head, nape, throat and base of pectoral.

Light tan; under head with black stripe; bright white patches at upper corner of mouth and chin tip; sides of body peppered with fine dark dots: an iridescent blue-black blotch on gill cover; anal fin with central broad black stripe; dorsal fins red-brown with white margin, each ray with black dots that form several stripes; tail fin rust colored above and below, with grey center and white margin, and about 5 wavy brown bars in center; lower rays of pectoral fin and edges of median fins bright white.

Size: reaches 6.4 cm.

Habitat: intertidal sand bottoms in bays and estuaries.

Depth: 0-7 m.

Northern California to Baja and the western and northeastern Gulf of California.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Estuary
  • Soft bottom only
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Sessile molluscs
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
  • Data
Egg Type
  • Benthic
  • Pelagic larva
  • Data
Global Endemism
  • East Pacific endemic
  • All species
  • TEP non-endemic
Regional Endemism
  • Continent only
  • Continent
  • Tropical Eastern Pacific (TEP) non-endemic
  • California province, primarily
  • All species
  • Temperate Eastern Pacific, primarily
  • Resident
Climate Zone
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • North Temperate (Californian Province &/or Northern Gulf of California)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 6.4
Depth Range Min
  • 0
Depth Range Max
  • 7