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Species: Eucinostomus argenteus, Spotfin mojarra

All Families:   All Genera:   All Species:

slender (depth 33-37% SL)
back: 7 saddles, joining 6-9 flank blotches
D last spine 5.8-7.1% SL
8 lower gill rakers
A III, base 16.7-19.2% SL
scaleless pit before eyes constricted at front by scales

Eucinostomus argenteus Baird & Girard in Baird, 1855

Spotfin mojarra

Body oval, fusiform, compressed, depth 32.7-36.5% of SL; the lower profile of the head distinctively concave; the mouth is highly extensible, pointing downward when protruded; jaws appear toothless but have tiny, brush-like teeth; lower border of preopercle smooth; bone under front of eye with smooth border; 8 (7-8) lower gill rakers; dorsal fin IX, 10, 2nd spine </= to distance between tip of snout and rear of eye, last spine short (5.8-7.1% of SL); pectoral not reaching to anal fin origin; anal rays III, 8, spines weak, 2nd spine short, < height of tail base, its base 16.7-19.2% SL; tail fin deeply forked; scales large, conspicuous and finely rough, covering most of head and body; dorsal and anal fins fold into a high scaly sheath along their bases; pectorals without scales; scales extend before front of eye on top of snout around scaleless groove that is constricted on each side at front by scales, but not crossed by a row scales at front.

Silver, with 6-9 faint dark spots along mid-side that join with 7 bars on upper back; outer part of spiny dorsal lightly dusky.

Grows to 20 cm.

Inhabits sand or mud bottoms of shallow coastal waters, occasionally entering estuaries and freshwater.

Depth: 0-68 m.

New Jersey to SE Brazil.


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Salinity
  • Brackish
  • Freshwater
  • Marine
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
Habitat
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Sand & gravel
  • Estuary
  • Freshwater
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Carnivore
  • Planktivore
Diet
  • Mobile benthic crustacea (shrimps/crabs)
  • Insects
  • Mobile benthic gastropods/bivalves
  • Sessile worms
  • Zooplankton
Egg Type
  • Pelagic
  • Pelagic larva
  • Data
Global Endemism
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Island (s)
  • Extends North of GC
  • Continent
  • Extends South of GC
  • Continent + Island (s)
  • GC non-endemic
  • Extends N + S of GC
Residency
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
IUCN Red List
  • Not evaluated / Listed
CITES
  • Not listed
Length Max
  • 20
Depth Range Min
  • 0
Depth Range Max
  • 68