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Species: Scarus coeruleus, Blue Parrotfish

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adult bright blue
juv - blue-grey + yellow upper head

Scarus coeruleus (Bloch, 1786)

Blue Parrotfish

Body an elongate oval, somewhat compressed; large males with a strong hump on snout; teeth fused into a beak with two broad joined plates on each jaw, outer surface of plates smooth, not covered by lips; top jaw overlaps lower jaw at front; 1-2 canines on rear side of top jaw; large crushing plates of molar teeth form “pharyngeal mill” in throat; gill rakers 31-50; dorsal fin IX, 10, no notch between spines and rays; anal fin III, 9; pectoral II, 12-13 (1st spine very short); tail fin rounded in juveniles, concave edge in large adults with elongate lobes; scales large, smooth, 3 rows on cheek, lowest row of 2 scales; 6 scales on center of nape before dorsal fin; lateral line in 2 sections.

Juveniles: pale blue, upper head, top of front of back and spiny dorsal yellow. Adults: deep blue or green-blue, with a broad grey area on cheek.

Reaches 120 cm.

On reefs.

Depth range: 2-25 m.

Maryland to the S Caribbean.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Rocks
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Corals
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Reef Associated
Feeding Group
  • Data
  • Herbivore
  • Data
  • Benthic macroalgae/seagrasses
  • Benthic microalgae
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent + Island (s)
  • Extends North of GC
  • GC endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 120
Depth Range Min
  • 2
Depth Range Max
  • 25