Shorefishes of the Eastern Pacific online information system

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Species: Lythrypnus dalli, Bluebanded goby

All Families:   All Genera:   All Species:

red + thin blue bars: head 2, body 3-5
D2 I, 18; A I, 13-14
pectoral clear, 18-19

Lythrypnus dalli (Gilbert, 1890)

Bluebanded Goby

Body robust; head round; with fleshy crest along top of head and nape; mouth very oblique; head without pores; papillae around mouth, on cheeks and operculum and over eye; front nostril a long tube, rear nostril a raised rim; tongue round to blunt; 5-7 gill rakers; dorsal fin VI (1st 2-3 spines filamentous in male) + I, 18 (15-19) rays; anal rays I,13-14 (11-16); pectoral rays 18-19 (17-20), rays unbranched; pelvics fused into disc; tail fin short, round, with 17 segmented rays; scales rough, body covered, none on head, nape, chest and pectoral base;38-54 midlateral rows.

Bright red grading to orange posteriorly; a pair of narrow blue bars on head and 3-5 similar bars on body; pectoral clear.

Size: attains 6.4 cm.

Inhabits rocky slopes, often seen with the purple sea urchin (Echinometra vanbrundti).

Depth: 1-75 m.

Southern California to southern Mexico, Ecuador and northern Peru.

Note: The population at Malpelo may be L. cobalus.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
  • Sand & gravel
  • Reef (rock/coral/oyster)
  • Rocks
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Ectoparasite cleaner
  • Planktivore
  • Data
  • Ectoparasites
  • Mobile benthic crustacea (shrimps/crabs)
  • Data
  • Zooplankton
Egg Type
  • Benthic
  • Pelagic larva
  • No data
Global Endemism
  • All species
  • TEP non-endemic
  • East Pacific endemic
Regional Endemism
  • Tropical Eastern Pacific (TEP) non-endemic
  • Continent only
  • Continent
  • All species
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 6.4
Depth Range Min
  • 1
Depth Range Max
  • 75