Shorefishes of the Eastern Pacific online information system

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Species: Thalassoma virens, Emerald wrasse, Longfin wrasse

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IP: olive + short red vertical lines on scales, head - dense red dots
TP: blue-green

Thalassoma virens Gilbert, 1890

Emerald wrasse, Longfin wrasse

Elongate, slender, compressed body; 1 pair canines at front of top jaw, 1 pair on bottom, none at rear of jaws; preopercle edge smooth; dorsal fin VIII, 12-13; anal rays III, 10-11; pectoral rays 15-16; tail fin slightly concave in IP, concave with long pointed lobes in TP;  lateral line unbroken, but bends abruptly down near end of soft dorsal fin; scales large (26-27 on lateral line), smooth; head scaleless.

IP: a dull green with redbrown spots or vertical streaks on scale centers; head densely covered with small red spots and short streaks; body with about 6 diffuse dark bars; TP: greenish blue, sometimes reddish on belly.

Size: grows to at least 30 cm.

Inhabits rocky reefs, mainly in surgy shallow waters.

Depth: 0-10 m.

Revillagigedos Islands and Clipperton, vagrants at the tip of Baja.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom only
  • Bottom
  • Reef only
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
  • Rocks
  • Corals
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • No Data
  • Bony fishes
  • Mobile benthic gastropods/bivalves
  • Sea-stars/cucumbers/urchins
  • Data
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • All species
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
Regional Endemism
  • Multiple oceanic islands endemic
  • Continent
  • TEP endemic
  • All species
  • Island (s)
  • Continent + Island (s)
  • TEP oceanic island (s) endemic
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
IUCN Red List
  • Listed
  • Vulnerable
  • Not listed
Length Max
  • 30
Depth Range Min
  • 0
Depth Range Max
  • 10