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Alopias superciliosus Lowe, 1841
Bigeye thresher
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| Native range |
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| This map was computer-generated and has not yet been reviewed. |
| Alopias superciliosus AquaMaps Data sources: GBIF OBIS |
Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii (sharks and rays) > Lamniformes (Mackerel sharks) > Alopiidae (Thresher sharks)
Etymology: Alopias: From alopex, Greek for fox, referring to the ancient vernacular “fox shark,” from its supposed cunning (ancients believed that when it took a bait, it swallowed the hook until it got to the cord, which it bit off and so escaped) (See ETYFish); superciliosus: super (L.), over and above; ciliosus (L.), haughty or having a raised eyebrow, referring to enormous upward- looking eyes set high on head and/or marked groove over eyes (See ETYFish).
More on author: Lowe.
Etymology: Alopias: From alopex, Greek for fox, referring to the ancient vernacular “fox shark,” from its supposed cunning (ancients believed that when it took a bait, it swallowed the hook until it got to the cord, which it bit off and so escaped) (See ETYFish); superciliosus: super (L.), over and above; ciliosus (L.), haughty or having a raised eyebrow, referring to enormous upward- looking eyes set high on head and/or marked groove over eyes (See ETYFish).
More on author: Lowe.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 0 - 730 m (Ref. 89423), usually 0 - 100 m (Ref. 43278). Subtropical; 46°N - 40°S, 180°W - 180°E (Ref. 54278)
Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Circumglobal; tropical and temperate seas. Highly migratory species.
Length at first maturity / Size / Weight / Age
Maturity: Lm 253.0, range 154 - 341 cm
Max length : 488 cm TL male/unsexed; (Ref. 40637); common length : 350 cm TL male/unsexed; (Ref. 5217); max. published weight: 363.8 kg (Ref. 40637); max. reported age: 20 years (Ref. 28081)
Max length : 488 cm TL male/unsexed; (Ref. 40637); common length : 350 cm TL male/unsexed; (Ref. 5217); max. published weight: 363.8 kg (Ref. 40637); max. reported age: 20 years (Ref. 28081)
Short description Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Anal spines: 0. A large thresher with very large eyes, an indented forehead, a broad caudal tip, and curved broad-tipped pectoral fins; 1st dorsal fin further back than in other threshers (Ref. 5578). Upper lobe of caudal fin very long and strap-like almost or quite equal to length of rest of shark; lower lobe short but well developed (Ref. 13570). Purplish grey above, cream below, posterior edges of pectoral and pelvic fins and sometimes first dorsal fin dusky; light color of abdomen not expanded over pectoral-fin bases (Ref. 13570).
Body shape (shape guide): fusiform / normal; Cross section: circular.
Body shape (shape guide): fusiform / normal; Cross section: circular.
Occurs in coastal waters over continental shelves, sometimes close inshore in shallow waters, and on the high seas far from land (Ref. 247, 43278, 58302). Oceanic, pelagic and near bottom at 1->500 m (Ref. 58302). Depth range to at least 500 m (Ref. 247). Feeds on pelagic fishes (lancetfishes, herring, mackerel and small billfishes (Ref. 43278)) and bottom fishes (hake (Ref. 43278)) and squids (Ref. 247). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 43278, 50449). Stuns its prey with its long caudal fin (Ref. 247). Utilized for human consumption, liver oil for vitamins, skin for leather, and fins for shark-fin soup (Ref. 247). Marketed fresh and may be broiled, baked or grilled, but unsuitable for steaming, boiling or frying; meat may be salted and dried (Ref. 9987). Also Ref. 33743.
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). With 2-4 young per litter (usually 2) (Ref. 247). Size at birth between 64-106 cm (Ref. 247); 100-140 cm TL (Ref.58048). No fixed mating or birthing season. Distinct pairing with embrace (Ref. 205).
Main reference
Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Vulnerable (VU) (A2bd); Date assessed: 06 November 2018
Threat to humans
Harmless (Ref. 247)
Human uses
Fisheries: commercial; gamefish: yes
FAO - Fisheries: landings, species profile; Publication: search | FishSource | Sea Around Us
More information
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genetics
Heterozygosity
Heritability
Genetics
Heterozygosity
Heritability
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree
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Special reports
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Internet sources
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Fisheries: landings, species profile; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 123201): 19.2 - 29, mean 27.1 °C (based on 6320 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00596 - 0.02017), b=2.90 (2.73 - 3.07), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278): 4.5 ±0.0 se; based on diet studies.
Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (tm=7; tmax=20; K=0.088; Fec=2-4).
Prior r = 0.23, 95% CL = 0.15 - 0.34, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref. 59153): Very high vulnerability (85 of 100).
Climate Vulnerability (Ref. 125649): High vulnerability (63 of 100).
Nutrients (Ref. 124155): Calcium = 6.7 [1.9, 34.8] mg/100g; Iron = 0.696 [0.174, 2.034] mg/100g; Protein = 20.5 [18.1, 22.8] %; Omega3 = 0.371 [0.150, 0.897] g/100g; Selenium = 35.9 [11.2, 103.6] μg/100g; VitaminA = 6.18 [2.01, 19.71] μg/100g; Zinc = 0.32 [0.16, 0.59] mg/100g (wet weight);