Shorefishes of the Eastern Pacific online information system

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Species: Labrisomus xanti, Large-mouth blenny

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body: ~ 8 bars
dense white spots: lower head & body
LL 64-69
A 17-19

Labrisomus xanti Gill, 1860

Large-mouth blenny

Body robust; head broad, snout blunt; eye large; nostrils with cirri; a branched cirrus over each eye; large bunch of heavily branched cirri on each side of nape; mouth large, slightly oblique, top rear jawbone exposed, not in a sheath; no enlarged canine behind patch of small teeth on each side of upper and lower jaw; teeth on center front of roof of mouth, but not sides; dorsal fin XVII-XIX, 10-12, notch between spines and rays; anal rays II, 17-19; pectoral rays 17-19; 3 pelvic soft rays; 64-69 lateral line scales; head scaleless, except 10 or more scales embedded on upper margin of gill cover.

Greenish brown with about 8 darker bars along side; 2 thin dark stripes bordering a pale area behind and a little below eye; a black blotch at front of dorsal fin; numerous small white spots on lower part of head and body.

Maximum size to 17.8 cm.

Habitat: weed covered rocky shores.

Depth: 1-10 m.

Central Baja California to the central Gulf of California to near Acapulco, the Revillagigedos islands. The most common member of the genus at most localities in the Gulf of California.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Rocks
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef only
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Carnivore
  • Mobile benthic worms
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Sponges/seasquirts/bryozoa
  • Data
Egg Type
  • Benthic
  • Pelagic larva
  • No data
Global Endemism
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
  • All species
Regional Endemism
  • Continent
  • Continent + Island (s)
  • All species
  • TEP endemic
  • Island (s)
  • Resident
Climate Zone
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • North Temperate (Californian Province &/or Northern Gulf of California)
IUCN Red List
  • Listed
  • Least concern
  • Not listed
Length Max
  • 17.8
Depth Range Min
  • 1
Depth Range Max
  • 10