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Species: Archosargus rhomboidalis, Sea Bream, Western Atlantic Seabream

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gold stripes
dark blotch behind opercle

Archosargus rhomboidalis (Linnaeus, 1758)

Sea Bream, Western Atlantic Seabream

Body oval, somewhat compressed, back humped; head small, pointed, with asymetrical convex profiles; eye moderate; mouth small, opens at front; bone under front of eye overlaps rear bone of top jaw; front teeth large, with wide, flattened, unnotched tips, 3 rows of molars on sides of top jaws; margin of preopercle smooth; dorsal fin long & low, XIII, front spine (sometimes skin covered) projects forwards, 10-11 rays; anal short, III, 9-10, second spine very strong; pectoral long, much longer than pelvic, reaching level of second anal spine; caudal fin forked; lateral-line scales 46-49; cheeks and opercles scaly, but no scales on snout or between the eye and mouth.

Light bluish on back and silvery white below; a prominent black blotch on upper side above pectoral fin and 7 irregular golden stripes on side; fins with an orange tint.

Size: grows to 33 cm.

Habitat: on mud and sand bottoms, in seagrass beds and mangroves, sometimes in brackish water.

Depth: 1-50 m.

New Jersey to southern Brazil.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Submerged vegetation
  • Estuary
  • Mangrove
  • Mud
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Demersal
  • Reef Associated
Feeding Group
  • Data
  • Omnivore
  • Data
  • Benthic macroalgae/seagrasses
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
  • Mobile benthic worms
  • Sea-stars/cucumbers/urchins
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Continent
  • Continent + Island (s)
  • Extends N + S of GC
  • Extends North of GC
  • Extends South of GC
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 33
Depth Range Min
  • 1
Depth Range Max
  • 50