Longnose Killifish
Fundulus similis
Longnose Killifish (*Fundulus similis*) is a small estuarine killifish of the Gulf of Mexico and nearby Atlantic coastal plain. It lives in shallow, often weedy brackish water and is an active surface feeder, but it is not a common targeted game fish.
Identification points
- Very slender, elongated body with a pointed snout.
- Single dorsal fin set far back on the body, typical of killifish.
- Silvery sides with a darker olive-brown back and a small mouth that reaches forward under the snout.
Habitat
Shallow marsh creeks, tidal flats, seagrass edges, mangrove-fringed shorelines, and quiet estuaries with soft bottoms; usually in brackish water but can move into fresher backwaters.
Bait notes
Take very small baits: bits of shrimp, bloodworms, marine worms, and tiny soft plastics or flies that imitate minnows or shrimp. Light tackle with small hooks is best; many anglers catch it while fishing for other estuary species.
Behavior
A quick, schooling baitfish that feeds near the surface on small crustaceans, worms, insects, and tiny fishes. It is most active in warm, calm water and around cover at low tide edges.
Caution
No notable consumption hazard is well established, but this species is small and usually released. Check local regulations for estuarine baitfish collection and avoid fishing in polluted backwaters.
Fishing notes
Use ultra-light gear, tiny jigs, sabiki-style rigs, or small bait under a float in shallow marsh cuts and creek mouths. Work slow along grass edges and in current seams; it is more often a bycatch than a primary target.