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Species: Menidia species A, Least Silverside

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D origin over mid-pelvic, all base over pelvic
A 10-14
LL pits begin on 3rd-4th scale beyond pectoral base
lateral scales 32-34
7 scale rows D origin to pelvic insertion

Menidia species A

Least Silverside

Body elongate, compressed; eye large; snout shorter than eye, without pits, pores or tubes on top; top jaw extendible, premaxilla with rear end greatly expanded, without expanded bony process above its center; teeth well developed, in bands; first dorsal IV-VI, origin over middle of pelvic fin, its entire base over the pelvic fin; horizontal distance between 1st dorsal and anal >7% of SL; anal fin I, 10-14; pelvics inserted nearer pectoral base than anal origin; scales without scalloped edges; 7 scale rows from insertion of pelvic to origin of dorsal fin; lateral line pits begin on 3rd-4th scale behind pectoral fin base on scale row below silver stripe; lateral scales 32-34.

Pale to slightly translucent; lateral stripe prominent; back faintly stippled in black.

Reaches 5.2 cm.

Hypersaline estuary.

Depth range: 0-5 m.

The northern tip of the Yucatan peninsula.

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  • Brackish
  • Hypersaline
  • Non Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Mid Water
  • Near Bottom
  • Near Surface
  • Surface
  • Water column only
  • Water column
  • Estuary
  • Flotsam
FishBase Habitat
  • Pelagic
Feeding Group
  • Carnivore
  • Data
  • Planktivore
  • Data
  • Zooplankton
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • GC endemic
  • Gulf of Mexico endemic
  • All species
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 5.2
Depth Range Min
  • 0
Depth Range Max
  • 5