Lepisosteus osseus  (Linnaeus, 1758)

Longnose gar
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Lepisosteus osseus
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Lepisosteiformes (Gars) > Lepisosteidae (Gars)
Etymology: Lepisosteus: Greek, lepis = scale + Greek, osteon = bone; bony sacled (Ref. 45335);  osseus: From the word osseus, meaning bony (Ref. 10294).

Environment / Climate / Range Ecology

Freshwater; brackish; demersal; pH range: 7.0 - 25.0; dH range: 10 - 15; depth range 0 - ? m (Ref. 55225), usually 0 - ? m (Ref. 55225).   Temperate; 12°C - 20°C (Ref. 2060); 47°N - 24°N, 97°W - 69°W (Ref. 55225)

Length at first maturity / Size / Weight / Age

Maturity: Lm 66.9  range ? - ? cm
Max length : 200 cm TL male/unsexed; (Ref. 40637); common length : 17.5 cm TL male/unsexed; (Ref. 12193); max. published weight: 22.8 kg (Ref. 4699); max. reported age: 36 years (Ref. 12193)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 6-9; Anal spines: 0; Anal soft rays: 8 - 10. Long narrow snout. Olivaceous brown above and white below. Dark spots on median fins and on body (Ref. 37032). Scales ganoid: thin bony scutes on leading edges of unpaired fins, and on both edges of caudal fin (Ref. 4639).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

North and Central America: along the coasts and inland from Quebec to northern Mexico.

Biology     Glossary (e.g. epibenthic)

Adults occur in sluggish pools, backwaters and oxbows of medium to large rivers, and lakes (Ref. 10294). Usually found near vegetation. Occasionally found in brackish waters. Spawning occur in freshwater and possibly slightly brackish water (Ref. 4639). Migrate up rivers during the spawning season (Ref. 4639). Eggs and larvae are demersal and adhesive (Ref. 4639). Voracious predator, feeding on various fishes and crustaceans. The roe is poisonous.

Main reference Upload your references | References | Coordinator : Wiley, Ed | Collaborators

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Pub. (20):183 p.

IUCN Red List Status (Ref. 90363)

Threat to humans

Other




Human uses

Fisheries: minor commercial; gamefish: yes; aquarium: public aquariums
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5781   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  4.2   ±0.73 se; Based on food items.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (tm=3-6; tmax=36; Fec=1,110).
Vulnerability (Ref. 59153):  Very high vulnerability (80 of 100) .
Price category (Ref. 80766):   Unknown.