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Species: Atherinella blackburni, Beach Silverside

All Families:   All Genera:   All Species:

white body, tail edge black
D1 origin over 2nd branched A ray
A 1, 22-26; scale sheath along entire base
lower gill rakers 15-19
pectoral 12-14
scales: lateral 44-51, around body 25-27

Atherinella blackburni (Schultz, 1949)

Beach Silverside

Elongate, body relatively deep; sensory pits on top of snout not as 4 large quadrangular pits; top jaw extendible, premaxilla with rear end greatly expanded, without expanded bony process above its center; first dorsal fin small, IV, its origin behind origin of anal fin; pectoral fins large, reaching well past pelvic fins, inserted high on body, above mid-level of eye; mid-side scales about 43-54; 25-27 scales around circumference of body; scale sheath on anal fin present as a single row of large scales along entire base of fin; a large scale at base of pelvic fins.

Seagreen above, crosshatched with dark pigment lines; snout darkly pigmented; silver midlateral band prominent, with dark top edge.

Size: reaches 13 cm.

Habitat: over sandy bottoms of coastal shores and estuaries.

Depth: 0-10 m?

The NW Caribbean to Brazil.

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  • Brackish
  • Freshwater
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Mid Water
  • Near Bottom
  • Water column only
  • Sand & gravel
  • Water column
  • Beach
  • Estuary
  • Freshwater
  • 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
  • Also in Brazil
  • Continent
  • Continent only
  • Extends South of GC
  • GC non-endemic
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 13
Depth Range Min
  • 0
Depth Range Max
  • 10