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Species: Ptereleotris calliura, Blue Dartfish

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D edges - black stripe
C pointed, top & bottom margins may be black

Ptereleotris calliura (Jordan & Gilbert, 1882)

Blue Dartfish

Body very elongate, compressed; head strongly compressed; mouth very oblique, opens above, lower jaw projecting, chin with longitudinal fold; dorsal fin VI + I, 22-24; anal fin I, 21; pectoral fins 20-25; pelvic fins separate, I, 4; tail fin long & pointed; scales very small, usually non-overlapping, embedded, 120-160 on mid-side, smooth with a few rough at rear, head scaleless; no lateral line.

Bluish gray head, body and tail fin, sometimes lavender; dorsal and anal fins yellowish, dorsals with a black stripe along outer edge; upper and lower margins of caudal fin may be dark.

Reaches: 12.5 cm.

Habitat: Found in burrows in with sand rubble substrate around coral reefs.

Depth: 5-82 m.

N Carolina to the Gulf of Mexico.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Demersal
  • Reef Associated
Feeding Group
  • Data
  • Planktivore
  • Data
  • Zooplankton
Egg Type
  • Benthic
  • Data
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent + Island (s)
  • Continental primarily
  • Extends North of GC
  • GC endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 12.5
Depth Range Min
  • 5
Depth Range Max
  • 82