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Species: Cubanichthys cubensis, Cuban killifish

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body: 1 dark stripe, male + several blue stripes
D 11
teeth single point
pectoral 18
no large scale behind operculum

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Cubanichthys cubensis (Eigenmann, 1903)

Cuban killifish

Body moderately deep and chubby; head flattened, but with an enlarged crest on back of skull; snout short and blunt; front nostril not tubular; covering of eye not continuous with skin of head; mouth wide, oblique, at front, protrusible; teeth 1-pointed, in at least 2 rows; dorsal fin short based, 11 rays (2 rudimentary), at mid-body, its origin well before anal fin origin; anal fin 10-11, with all rays branched; dorsal and anal fins high and angular, last ray extended, enlarged in males; pectoral fin short, 18 rays,  low on side; pelvics small, 6-7 rays, on belly well behind pectoral base; tail fin bluntly rounded; body with large, smooth scales, 24-26 scales in lateral series; head scaly; no enlarged scale just behind upper corner of operculum; lateral line reduced to a series of pits along side of body.

Grey brown above, pale below; female with black stripe from chin to eye; continuing to center of end of tail base, that bordered above and below by white; fins clear; male with similar brown stripe, that on body narrowly edged in blue-white; a dark spot edge with white behind corner of operculum; a blue-white stripe along upper body, 2 more along lower body; dorsal and anal fins yellow, with black edges, pelvics yellow; tail fin with at least 2 vertical rows of dark spots.

Reaches 8 cm.

Fresh to brackish water.

Depth range: 0-1 m.

Cuba.


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Salinity
  • Non Marine
  • Brackish
  • Freshwater
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
Habitat
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Freshwater
  • Estuary
FishBase Habitat
  • Demersal
Feeding Group
  • Omnivore
  • Detritivore
  • No Data
Diet
  • Benthic microalgae
  • Detritus
  • Mobile benthic worms
  • Insects
Egg Type
  • Data
  • Benthic
  • No pelagic larva
  • No pelagic phase
Global Endemism
  • Greater Caribbean endemic
  • West Atlantic Endemic
Regional Endemism
  • Antilles endemic
  • Island (s)
  • GC endemic
  • Island (s) only
Residency
  • Resident
Climate Zone
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Not evaluated / Listed
CITES
  • Not listed
Length Max
  • 8
Depth Range Min
  • 0
Depth Range Max
  • 1