Shorefishes of the Greater Caribbean online information system

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Species: Stegastes otophorus, Freshwater Gregory, Freshwater Damselfish

All Families:   All Genera:   All Species:

dark brown; ends of D, A & C & all pectoral yellow
juv: brown; blue-dot lines upper front; end D & A, end tail base & all C - yellow

Stegastes otophorus (Poey, 1860)

Freshwater Gregory, Freshwater Damselfish

Body oblong, compressed; snout bluntly pointed; 1 pair of nostrils; margin of preopercle serrated; margin of bone under eye serrated, without notch between it and the bone before it; mouth small, protrusible, opens at front; teeth in single row, long and close-set incisors; 10-13 lower gill rakers; a single continuous dorsal fin, XII-XIII, 12-14; anal fin II, 12-14; dorsal and anal fins extend past tail fin base, with angular lobes; pectoral rays 17-19; no projecting short spines at upper and lower base of tail fin; lobes of tail fin bluntly rounded; scales are moderately large and rough; body scaled, head largely scaled (snout scaled to nostrils), basal parts of the median fins scaled; lateral line incomplete, ends under end of dorsal fin base; lateral-line scales 16-19.

Adult: dark grey-brown, rear edges of soft dorsal and anal fins and tail fin broadly orange yellow; pectoral fin yellowish. Juvenile: dark brown, dotted blue lines on head running back along top of body; an indistinct elongate black blotch at rear corner of dorsal fin; soft dorsal and anal, tail fin and rear of tail base yellow.

Size: reaches 13 cm.

River mouths and low salinity areas; enters freshwater.

Depth: 0-3 m.

Cuba to the S Caribbean.

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  • Brackish
  • Freshwater
  • Non Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Estuary
  • Freshwater
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Omnivore
  • Data
  • Benthic microalgae
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent + Island (s)
  • Continental primarily
  • GC endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Data deficient
  • Listed
  • Not listed
Length Max
  • 13
Depth Range Min
  • 0
Depth Range Max
  • 3