Shorefishes of the Eastern Pacific online information system

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Species: Stathmonotus lugubris, Mexican worm-blenny

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cirri:- eye & nostril

Stathmonotus lugubris Böhlke, 1953

Mexican Worm Blenny

Elongate, worm-like body; short, bluntly pointed head with large oblique mouth, head more swollen & mouth longer in male; rear edge of preopercle covered with skin; cirrus on front nostril, flaplike cirrus over eye, no cirri on nape; dorsal fin XXXVI-XXXX, 0; anal rays II, 20-23; pectoral rays 10-11.

Color variable: green with an oblique pale bar on operculum and a row of brown spots midlaterally; white with the lower head and belly brown, clear spots on the white parts, outer half of tail clear, white bars on chin and throat; black with outer parts of dorsal, tail and anal fins clear; blackish green fading to green on the outer parts of the dorsal, anal and tail fins, pale bars on chin and throat.

Size: 6 cm.

Habitat: rocky shores and weedy areas.

Depth: 0-5 m.

Sinaloa to Oaxaca (Mexico).

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Reef only
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Submerged vegetation
  • Rocks
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Carnivore
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
  • No Data
Egg Type
  • Benthic
  • Pelagic larva
  • No data
Global Endemism
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
  • All species
Regional Endemism
  • Continent
  • Mexican province endemic
  • Continental TEP endemic
  • All species
  • TEP endemic
  • Continent only
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 6
Depth Range Min
  • 0
Depth Range Max
  • 5