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Caranx crysos  (Mitchill, 1815)

Blue runner
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Caranx crysos
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Brazil country information

Common names: Carapau, Cavaca, Cavaco
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Feitoza, B.M., R.S. Rosa and L.A. Rocha, 2005
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Ranges from Paraíba south to São Paulo, including Manuel Luiz Reefs, Atol das Rocas, Fernando de Noronha, St. Paul’s Rocks, Zumbi Reefs, and Abrolhos Reefs (Ref. 57756). Also Ref. 7251, 13121, 13442, 26938, 84275.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Floeter, S.R., J.L. Gasparini, L.A. Rocha, C.E.L. Ferreira, C.A. Rangel and B.M. Feitoza, 2003
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Carangidae (Jacks and pompanos) > Caranginae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Main reference

Size / Weight / Age

Max length : 70.0 cm TL male/unsexed; (Ref. 5217); common length : 40.0 cm TL male/unsexed; (Ref. 5217); max. published weight: 5.1 kg (Ref. 40637); max. reported age: 11 years (Ref. 5803)

Length at first maturity
Lm 27.4  range ? - ? cm

Environment

Marine; brackish; reef-associated; depth range 0 - 100 m (Ref. 4233)

Climate / Range

Subtropical, preferred 24°C (Ref. 107945); 46°N - 26°S, 97°W - 32°E

Distribution

Eastern Atlantic: Senegal to Angola (Ref. 4225, 13121, 57392), including the western Mediterranean, St. Paul's Rocks (Ref. 13121), and Ascension Island. Reported from Mauritania (Ref. 55783). Western Atlantic: Nova Scotia, Canada to Brazil (Ref. 7251), including the Gulf of Mexico (Ref. 9626) and the Caribbean. Also found in Argentina (Ref. 59355). In the tropical Eastern Pacific, it is replaced by Caranx caballus Günther 1869, which may be conspecific.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 9; Dorsal soft rays (total): 22-25; Anal spines: 3; Anal soft rays: 19 - 21. Diagnosis: body elongate (depth comprised 3.2-3.5 times in fork length) and moderately compressed; snout slightly rounded (Ref. 57392). Maxilla ends below middle of eye (Ref. 26938, 57391). 2 dorsal fins, 1st with 8 spines, 2nd with 1 spine and 22-25 soft rays; anal fin with 2 spines, followed by 1 spine and 19-21 soft rays; anterior lobe of soft dorsal and anal fins moderately developed, their height smaller than head length; pectoral fins falcate, longer than head; scales small and cycloid; breast completely scaleless (Ref. 57391). 45 (Ref. 26938) - 56 (Ref. 57392) scutes along straight part of lateral line. Coloration: back light olivaceous to bluish-green, sides silvery-grey to golden; juveniles with about 7 dark crossbars on sides (Ref. 57392).

Biology     Glossary (e.g. epibenthic)

A schooling species (Ref. 5217, 57391) generally not far from the coast (Ref. 5217), in coastal marine and brackish waters to at least 100 m depth (Ref. 57392). Juveniles often found in association with floating Sargassum (Ref. 5217), often entering lagoons and estuaries (Ref. 57392). Adults feed on fishes, shrimps, and other invertebrates. They spawn offshore from January through August (Ref. 26938). Eggs are pelagic (Ref. 4233). Excellent food fish (Ref. 9626); marketed fresh, frozen (Ref. 5521), and salted. Often used for bait (Ref. 26938). Maximum reported total length 550mm in Ref. 57392.

IUCN Red List Status (Ref. 115185)

Threat to humans

  Reports of ciguatera poisoning (Ref. 30911)



Human uses

Fisheries: minor commercial; gamefish: yes

More information

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
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

Download XML

Internet sources

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)
4.1   ±0.4 se; Based on diet studies.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.32-0.38; tmax=11; Fec=41,000)

Vulnerability (Ref. 59153)
Low to moderate vulnerability (34 of 100)
Price category (Ref. 80766)
Low