Johnius pacificus   Hardenberg, 1941

Pacific croaker
Catalog of Fishes (gen., sp.) | ITIS | CoL
Classification
Actinopterygii | Perciformes | Sciaenidae
Synonyms
Common names
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Main reference
Size / Weight / Age
Max length : 14.0 cm SL male/unsexed; (Ref. 9772); common length : 10.0 cm SL male/unsexed; (Ref. 9772)
Environment
Benthopelagic; freshwater; brackish; marine
Climate / Range
Tropical
Distribution
Western Central Pacific: northern (=Pacific) coasts of New Guinea.
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Short description
Dorsal spines (total): 11; Dorsal soft rays (total): 25 - 29; Anal spines: 2; Anal soft rays: 7. Eye small, 11 to 16 % of head length; snout bluntly rounded; no barbel on chin; teeth differentiated into large and small in both jaws; gill rakers slender, about half the length of gill filaments at angle of arch, 10 to 13 on lower limb. Second anal spine long, stiff, 45 to 54 % of head length. Scales on head and throat cycloid (smooth). Swim bladder hammer-shaped, with about 12 pairs of arborescent appendages along its sides, the first entering head and sending a palmate branch to the front of the pectoral arch. Sagitta (large earstone) with a tadpole-shaped impression, the head of which has its long axis lying obliquely to that of sagitta and the tail expanded and deepened as a hallow cone connected with the head by a narrow groove.
Biology
    Glossary (e.g. epibenthic)
Inhabits estuaries and rivers (Ref. 9772).
IUCN Red List Status (Ref. 57073)
Threat to humans
  Harmless
Human uses
Fisheries: of no interest
More information
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Other references
Biblio
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Collaborators
Pictures
Stamps
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision
Tools
Special reports
Download XML
Internet sources
Estimation of some characteristics with mathematical models
Resilience (Ref. 69278)
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Vulnerability (Ref. 59153)
Price category (Ref. 80766)
Low vulnerability (15 of 100)




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Page last modified by : elaxamana, 15 July 2009

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