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Lutjanus johnii  (Bloch, 1792)

John's snapper
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Lutjanus johnii
Picture by Cook, D.C.


country information

Common names: [No common name]
Occurrence:
Salinity:
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information:
National Fisheries Authority:
Occurrences: Occurrences Point map
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Lutjanidae (Snappers) > Lutjaninae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Main reference

Size / Weight / Age

Max length : 97.0 cm TL male/unsexed; (Ref. 40637); common length : 50.0 cm TL male/unsexed; (Ref. 55); max. published weight: 10.5 kg (Ref. 4699)

Length at first maturity
Lm ?, range 39 - ? cm

Environment

Marine; brackish; reef-associated; oceanodromous (Ref. 51243); depth range 0 - 80 m (Ref. 30573)

Climate / Range

Tropical, preferred 28°C (Ref. 107945); 31°N - 30°S, 30°E - 174°W (Ref. 55)

Distribution

Indo-West Pacific: East Africa to Fiji, north to the Ryukyu Islands, south to Australia.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 10; Dorsal soft rays (total): 13-14; Anal spines: 3; Anal soft rays: 8. Dorsal profile of head steeply sloped. Preorbital width equal to eye diameter or larger. Preopercular notch and knob poorly developed. Scale rows on back parallel to lateral line. Center of each scale often with a reddish-brown spot, giving an overall appearance of series of horizontal lines on side of body. Generally yellow with a bronze to silvery sheen, shading to silvery white on belly and underside of the head. A large black blotch mainly above the lateral line below the anterior dorsal-fin rays.

Biology     Glossary (e.g. epibenthic)

Adults probably frequent coral reef areas; juveniles found in mangrove estuaries (Ref. 30573). Feed on fishes and benthic invertebrates including shrimps, crabs and cephalopods. In Hong Kong live fish markets (Ref. 27253).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Harmless



Human uses

Fisheries: commercial; aquaculture: commercial; gamefish: yes

More information

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion
Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

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Internet sources

BHL | BOLDSystems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | ECOTOX | FAO(Aquaculture: production; fisheries: production; publication : search) | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | Sea Around Us | SeaLifeBase | Tree of Life | uBio | uBio RSS | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record | Fishtrace

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.2   ±0.6 se; Based on diet studies.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.13-0.38)

Vulnerability (Ref. 59153)
High vulnerability (60 of 100)
Price category (Ref. 80766)
High