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Species: Membras martinica, Rough Silverside

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anus nearer A than to pelvic base
pelvic tips not reaching anus
rear edges flank scales fringed

Membras martinica (Valenciennes in Cuvier & Valenciennes, 1835)

Rough Silverside

Slender, elongate, compressed; 4 large quadrangular sensory pits on top of snout; top jaw strongly extendible, premaxilla with rear end greatly expanded, without expanded bony process above its center; first dorsal V, origin well before origin of anal; anus nearer origin of anal fin than to base of pelvic; tips of pelvics not reaching anus; pectoral reaches past origin of pelvic; scales on sides with fringed rear edges; pelvic axillary scale >1/3 fin length.

Upper body bright yellow to sea-green, speckled or cross-hatched with dark pigment; lower body silverish; silver flank stripe.

Size: large 15 cm.

Habitat: coastal lagoons, and bays.

Depth: 0-10 m?

New York to the Gulf of Mexico.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Mid Water
  • Near Surface
  • Surface
  • Water column only
  • Water column
  • Estuary
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Pelagic
  • Reef Associated
Feeding Group
  • Data
  • Planktivore
  • Data
  • Zooplankton
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • Extends North of GC
  • GC non-endemic
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 15
Depth Range Min
  • 0
Depth Range Max
  • 10