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, 17; A I, 15.5
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, 17 (15-19) rays; I, 15.5 (11-16) anal rays; 18-19 (17-20) pectoral rays; pectoral 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; 40-50 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  the Gulf of California to central Peru, Cocos, Malpelo and the Galapagos.

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