Shorefishes of the Greater Caribbean online information system

Español  Contact

Species: Fundulus similis, Longnose Killifish

All Families:   All Genera:   All Species:

snout long, pointed
D 11-13, origin before A origin
both sexes: 12+ narrow dark bars
8 chin pores
gill rakers 6-10
33-37 lateral scales

Fundulus similis (Baird & Girard, 1853)

Longnose Killifish

Body slender, elongate, compressed; head flattened above, with straight to slightly concave profile; snout long and sharp; cover of eye not continuous with head skin; front nostril not tubular; mouth small, oblique, opens at front, protrusible, distinctly below level of center of eye; top jaw twisted, lower jaw projecting; 8 pores under chin; jaws with outer row of pointed conical teeth, inner band of simple teeth; gill rakers short 6-10; no spines in fins; dorsal fin short based, its origin distinctly before anal fin origin, 11-13 rays; anal fin with 3rd fin ray branched, 9-13 rays; pectoral with narrow base, rounded, inserted low on side, 16-21 rays; pelvics inserted well behind pectoral base; tail fin bluntly rounded; small smooth scales, 33-37 midlateral rows; lateral line reduced to a series of pits along side of body.

Both sexes olive with 9-13 narrow dark bars on body and tail; male with a dark blotch on or behind top corner of operculum, sometimes yellow on lower head and/or tail fin; sometimes a black spot at lower rear corner of dorsal fin.

Reaches 15 cm.

Bays, estuaries and coastal marshes; brackish and marine.

Depth range: 0-1 m.

NE Florida to the western Gulf of Mexico.

Note: Sometimes regarded as a subspecies of S. majalis.

High Resolution Map Download

Species Data Create Report Export as Word File Export as Excel File
  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Beach
  • Estuary
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Omnivore
  • Planktivore
  • Data
  • Zooplankton
  • Benthic microalgae
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
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
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 15
Depth Range Min
  • 0
Depth Range Max
  • 1