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Species: Fundulus grandis, Gulf Killifish

All Families:   All Genera:   All Species:

snout < / = eye
D origin before A origin
gill rakers 7-13
tail base least depth > 13% SL
9-10 chin pores
female: pouch before A > 10% fin length
31-38 lateral scales
predorsal scales 13-19

Fundulus grandis Baird & Girard, 1853

Gulf Killifish

Body elongate, compressed at rear; head flattened above, with straight to slightly convex upper profile; snout rounded, </= eye, head behind eye 1-2 times eye diameter; cover of eye not continuous with head skin; front nostril not tubular; mouth small, oblique, opens at front, protrusible, top jaw twisted, lower jaw projecting; chin area with 9-10 pores; jaws with multiseried teeth; gill rakers short, 7-13; no spines in fins; dorsal fin short based, its origin slightly before anal fin origin, 10-14 rays; female with a pouch before the anal fin that is >10% the length of that fin’s base; anal fin with 3rd fin ray branched, 10-11 rays; dorsal and anal fins longer in male; pectoral with narrow base, rounded, inserted low on side, 18-19 (15-21) rays; pelvics inserted well behind pectoral base; least depth of tail base >13% SL; tail fin rounded; small smooth scales, 33-34 (31-38) midlateral rows; scales before dorsal fin 13-19; lateral line reduced to a series of pits along side of body.

Male body with 10-11 wide dark bars that are usually wider than pale interspaces; body and fins with small pale spots, fins with yellow outer margins. Female: uniform brown body and fins, with faint dark bars on body.

Reaches 18 cm.

Vegetated freshwater and brackish water habitats.

Depth range: 0-1 m.

Georgia to the Gulf of Mexico; northern Cuba.

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  • Brackish
  • Freshwater
  • Non Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Soft bottom only
  • Submerged vegetation
  • Estuary
  • Freshwater
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Omnivore
  • Data
  • Benthic microalgae
  • Bony fishes
  • Insects
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
  • 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
  • Extends North of GC
  • GC endemic
  • 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
  • 18
Depth Range Min
  • 0
Depth Range Max
  • 1