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Diadromous Least Concern 🌡️ Tropical

Longfin crevalle jack

Caranx fischeri Vaniz & Carpenter, 2007
Max Length
100 cm
Max Weight
26.0 kg
Lifespan
-
Trophic Level
4.2
Depth
6–25 m
Climate
Tropical
Resilience
Medium
Vulnerability
58.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

This species is reported to occur in moderate to large schools in coastal areas, estuaries and lagoons that are essential habitat for juveniles and young. Reports that it descends far up coastal rivers to spawn are unconfirmed and true freshwater occurrence is doubtful, but there are verified collections of juveniles from three separate coastal river drainages. Feeds mainly on fish, shrimp and other invertebrates. It has been a focus of commercial interest and may be utilized fresh, frozen, smoked, dried-salted and for oil and fishmeal, with edibility reported as poor to good, and taste improves when bleeding upon landing is done .

Scientific Name
Caranx fischeri
Authority
Vaniz & Carpenter, 2007
Habitat
Diadromous
Climate
Tropical
IUCN Status
LC
Max Length
100 cm
Max Weight
26 kg
Depth Range
6–25 m
Trophic Level
4.2
Resilience
Medium
Vulnerability
58.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9; Dorsal soft rays (total): 21 - 24; Anal spines: 3; Anal soft rays: 17 - 19; Vertebrae: 24. This species is a member of the Caranx hippos complex, and is distinguished by the following characters: segmented dorsal-fin rays 21-23 (exceptionally 24); segmented anal-fin rays 17-19, usually 18; posttemporal bones are hyperossified in specimens larger than 20 cm FL; cleithrum, first pterygiophore of dorsal and anal fins, and neural spines of vertebrae are relatively slender and never hyperossified; in specimens >20 cm FL, heights of longest dorsal-and anal-fin rays are both 0.7-1.3 in head length; in adults, anal-fin lobe white anteriorly and remainder of fin is gray to brown . Cross section: compressed.

🌀 Behaviour

Behavioural data for Longfin crevalle jack is currently being reviewed.

🦐 Diet

Diet information for Longfin crevalle jack is currently being compiled.

🥚 Reproduction

Reproduction data for Longfin crevalle jack is currently being compiled.

🌍 Habitat & Distribution

Marine; freshwater; brackish; pelagic-neritic; depth range 6 - 25 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish 🐟 Pelagic
Trophic Level
4.2±0.7
🐠 Schooling
Food Items

fish, shrimp and other invertebrates

📐 Morphometrics

Length–Weight Relationship: W = 0.0166 × L2.96 (TL)
Max TL
100cm
Max Weight
26,000g
Dorsal Spines
9
Dorsal Rays
23
Anal Spines
3
Anal Rays
18
Vertebrae
24

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
58.00/100
High vulnerability
Trophic Level
4.2
Apex / Top predator
Climate Zone
Tropical
Described By
Vaniz & Carpenter, 2007

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