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Species: Symphysanodon mona, Akarnax Slopefish

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body depth ~30% SL
A 7 (6-7)
LL ~47
gill rakers 24-25

Symphysanodon mona Anderson & Springer, 2005

Akarnax Slopefish

Body slender (depth ~30% SL), somewhat compressed; eye large; snout shorter than eye; mouth oblique, opens at front; top edge of rear bone of top jaw covered by thin bone under eye; top jaw teeth small; front teeth of lower jaw enlarged, exposed, fitting into central toothless notch of top jaws; operculum with 2 spines; gill rakers 24-25 (4-5+ 19-21); dorsal fin continuous, usually IX, 10, no notch between spines and rays; pectoral 17; tail fin deeply forked; anal fin III, 7; pelvics inserted under pectoral base, I, 5; scales rough; most of head & jaws scaled; dorsal and anal fins without scales, but with a basal scaly sheath; lateral line scales ~47.

Body and fins probably red.

Reaches at least 11 cm.

Bottom living on deep reefs.

Depth: 384 m.

Known only from the holotype collected between Puerto Rico and Hispaniola.

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  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom + water column
  • Near Bottom
  • Reef only
  • Water column
  • Reef (rock/coral/oyster)
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Bathydemersal
  • Reef Associated
Feeding Group
  • Data
  • Planktivore
  • Data
  • Zooplankton
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Antilles endemic
  • Caribbean endemic
  • GC endemic
  • Island (s)
  • Island (s) only
  • All species
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 11
Depth Range Min
Depth Range Max
  • 384