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Species: Floridichthys polyommus, Ocellated Killifish

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4-8 long, thin dark bars
D 11-12
teeth - 3 points
pectoral 18-21
slightly enlarged scale behind operculum

Floridichthys polyommus Hubbs, 1936

Ocellated Killifish

Body moderately deep and chubby; head flattened, upper profile convex; snout short and blunt; front nostril not tubular; covering of eye not continuous with skin of head; mouth wide, oblique, at front, protrusible; 6 pores under chin; teeth 3-pointed, in single series; 12 short, stout gill rakers; dorsal fin short based, 11-12 rays, at mid-body, its origin before anal fin origin; anal fin with 9-10 branched rays; dorsal and anal fins longer in male; pectoral fin short, 18-21 rays, low on side; pelvics small, 6-7 rays, on belly well behind pectoral base; tail fin bluntly rounded; body with large, smooth scales, 23-25 lateral scales; head scaly; one wide scale across entire snout, with naked strip before that; scales before pelvics large and regularly positioned, 17 or fewer; no enlarged scale just behind upper corner of operculum; lateral line reduced to a series of pits along side of body.

Color very variable: top of head and body dark grey; a series of oblong metallic brown blotches on upper body between operculum and the base of the tail fin; back with a series of 4-8 irregular narrow dark bars that run down onto side, ~half of them reaching bottom of body, these alternating with short bars, spaces between bars silver to yellowish; cheek and opercle with horizontal to oblique gold bars; breeding male with and lower sides and tail base with silver spots outlined in blue on spaces between dark bars; lower head and belly golden; pectorals with gold tint; pelvic and anal fins orange, dark grey on inner parts; dorsal fin sometimes yellow, with dark grey rays, outer margin orange; tail fin with gold fringe, with ~ 5 vertical rows of grey to gold spots.

Reaches 11.6 cm.

Brackish water, occasionally in freshwater.

Depth range: 0-1 m.

The SW Gulf of Mexico to Belize.

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  • Brackish
  • Freshwater
  • Non Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Submerged vegetation
  • Estuary
  • Freshwater
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Omnivore
  • Planktivore
  • Data
  • Zooplankton
  • Benthic microalgae
  • Bony fishes
  • Detritus
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic worms
Egg Type
  • Benthic
  • Data
  • No pelagic larva
  • No pelagic phase
Global Endemism
  • All species
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • GC endemic
  • All species
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 11.6
Depth Range Min
  • 0
Depth Range Max
  • 1