© Copyright Ross Robertson, 2006 · 12 Carcharhinus obscurus Click on map for details about points. IDnature guides Checklist Australia Vertebrata Fish Fish species NCSM SFTEP Links We parsed the following live from the Web into this page. Such content is managed by its original site and not cached on Discover Life. Please send feedback and corrections directly to the source. See original regarding copyrights and terms of use. Australian Faunal Directory FishBase 80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2 Set display option above. Click on images to enlarge. © Copyright John Rangall, 2006 · 0 Carcharhinus obscurus © Copyright Photographer/SFTEP, 2002 · 0 Carcharhinus obscurus © Copyright Photographer/SFTEP, 2002 · 0 Carcharhinus obscurus 4 thumbnails  •  slide show español Overview Main identification features snout short, round; large eyes 1st dorsal fin : moderate, round front edge; origin ~opposite pectoral rear tip low ridge ds 2nd dorsal fin greater than 2.3 percent total length pectoral: large, curved rear edge Snout short, rounded, length before mouth 5.7-8.4% of total length; ridge on back between dorsal fins; origin of first dorsal fin over or slightly behind inner rear corner of pectoral fins; first dorsal fin relatively low; the height 5.8-10.4% of total length, tip pointed to narrowly rounded; origin of second dorsal above anal fin origin; pectoral large, curved. Grey, shading to white ventrally, with a faint, near-horizontal, grey band invading the white of upper abdomen; tips of fins dusky. Size: reaches 420 cm; size at birth 69-100 cm. Habitat: Inshore to offshore coastal- pelagic, primarily on continental shelves, not in low salinity habitats. Depth: 0-400 m. Circumglobal in tropical and warm temperate seas; from California to the Gulf of California and central Mexico, and the Revillagigedos. Similar to, Galapagos Shark but with dorsal fin pointed and shorter. Attributes Abundance: Common. Cites: Not listed. Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos). Depth Range Max: 400 m. Depth Range Min: 0 m. Diet: sharks/rays; bony fishes; octopus/squid/cuttlefish; sea-stars/cucumbers/urchins; mobile benthic crustacea (shrimps/crabs); sharks/rays; mobile benthic gastropods/bivalves. Eastern Pacific Range: Northern limit=33; Southern limit=19; Western limit=-118; Eastern limit=-105; Latitudinal range=14; Longitudinal range=13. Egg Type: Live birth; No pelagic larva. Feeding Group: Carnivore. FishBase Habitat: Pelagic. Global Endemism: Circumtropical ( Indian + Pacific + Atlantic Oceans); East Pacific + Atlantic (East +/or West); Transisthmian (East Pacific + Atlantic of Central America); East Pacific + all Atlantic (East+West); TEP non-endemic; West + East Pacific (but not Central); "Transpacific" (East + Central &/or West Pacific); All species. Habitat: Water column. Inshore Offshore: Inshore; Inshore Only. IUCN Red List: Near threatened; Listed. Length Max: 420 cm. Regional Endemism: Island (s); Continent; Continent + Island (s); Eastern Pacific non-endemic; Tropical Eastern Pacific (TEP) non-endemic; All species. Residency: Resident. Salinity: Brackish; Marine. Water Column Position: Mid Water; Near Bottom; Near Surface; Surface; Water column only; Names Scientific source: Integrated Taxonomic Information System Links to other sites Fishbase Catalog of Fishes Integrated Taxonomic Information System References Bellido-Millán, J.M. and Villavicencio-Garayzar, C.J., 2002., Pesqueria artesanal de tiburon en la region central del Golfo de California. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:143-152. Béarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741. Castro-Aguirre, J.L. and Balart, E.F., 2002., La ictiofauna de las islas Revillagigedos y sus relaciones zoogeograficas, con comentarios acerca de su origen y evolucion. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:153-170. Compagno , L. J. V. and Cook, S. F., 1995., The exploitation and conservation of freshwater elasmobranchs: status of taxa and prospects for the future., Journal of Aquariculture and Aquatic Sciences, 7:62-90. Compagno, L.J.V., 1999., Checklist of living elasmobranchs. In Hamlett W.C. (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes., The John Hopkins University Press:471-498. Compagno, L.J.V., 1984., Sharks of the World. An annotated and illustrated catalogue of shark species known to date. Part 2. Carcharhiniformes. FAO Species Catalogue., FAO Fish. Synop. No 125, 4(2):251-655. Eschmeyer , W. N. , Herald , E. S. and Hamman, H., 1983., A field guide to Pacific coast fishes of North America from the Gulf of Alaska to Baja California. Peterson Field Guide Ser. 28., Houghton Mifflin:336pp. Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versión 1.0. Projecto de la Macrofauna del Golfo .  Derechos reservados de los autores y Conservación Internacional. Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200. Galván-Magaña, F., Abitia-Cárdenas, L.A., Rodríguez-Romero, J., Pérez-España, H., Chávez-Ramos, H., 1996., Systematics list of the fishes from Cerralvo island, Baja California Sur, Mexico., Ciencias Marinas, 22:295-311. Galván-Magaña, F., Gutiérrez-Sánchez, F., Abitia-Cárdenas, L.A., Rodríguez-Romero, J., 2000., The distribution and affinities of the shore fishes of the Baja California Sur lagoons. In Aquatic Ecosystems of Mexico: Status and Scope. Eds. M. Manuwar, S.G. Lawrence, I.F. Manuwar & D.F. Malley. Ecovision World Monograph Series., Backhuys Publishers:383-398. Gelsleichter , J. , Musick , J. A. and Nichols, S., 1999., Food habits of the smooth dogfish, Mustelus canis, dusky shark, Carcharhinus obscurus, Atlantic sharpnose shark, Rhizoprionodon terraenovae, and the sand tiger, Carcharias tauruss, from the northwest Atlantic Ocean., Environmental Biology of Fishes, 54:205-217. Lea, R.N. and Rosenblatt, R.H., 2000., Observations on fishes associated with the 1997-1998 El Niño off California., CalCOFL Rep., 41:117-129. Lesueur, C. A., 1818., Description of several new species of North American fishes., J. Acad. Nat. Sci. Phila., 1:222-235. Love, M.S., Mecklenburg, C.W., Mecklenburg, T.A., Thorsteinson, L.K., 2005., es of the West Coast and Alaska: a checklist of North Pacific and Artic Ocena species from Baja California to the Alaska-Yukon border., U.S. Department of the Interior, U.S. Geological Survey, Biological Resources Division, 288pp. Madrid Vera , J. , Ruíz Luna , A. and Rosado Bravo, I., 1998., Peces de la plataforma continental de Michoacán y sus relaciones regionales en el Pacífico mexicano., Revista de Biologia Tropical, 42(2):267-276. Meek , S.E. and Hildebrand, S.F., 1923., The marine fishes of Panama. Part I., Field Mus. Nat. Hist., Zool. Ser. Publ., XV:1-330. Musick, J.A., Harbin, M.M., Berkeley, S.A., Burgess, G.H. Eklund, A.M., Findley, L., Gilmore, R.G., Golden, J.T., Ha, D.S., Huntsman, G.R., McGovern, J.C., Parker, S.J., Poss, S.G., Sala, E., & Schmidt, T.W., Sedberry, G.R., Weeks, H., Wright, S.G., 2000., Marine, estuarine, and diadromous fish stocks at risk of extinction in North America (exclusive of Pacific salmonids)., Fisheries, 25:6-30. Ramírez Rodríguez, M., 1997., Producción pesquera en la Bahía de La Paz, B.C.S.. En Urbán Ramírez, J. y M. Ramírez Rodríguez (Eds.). La Bahía de La Paz investigación y conservación., Universidad Autónoma de Baja California Sur:273-282. Van der Heiden , A. M. and Findley, L. T., 1988., Lista de los peces marinos del sur de Sinaloa, México., Anales del Centro de Ciencias del Mar y Limnologia de la Universidad Autonoma Nacional de Mexico, 15:209-224. Villavicencio Garayzar , C. J. , Mariano Meléndez , E. and Downton Hoffmann, C., 1997., Tiburones capturados comercialmente en la Bahía de La Paz, B.C.S.. En Urbán Ramírez, J. y M. Ramírez Rodríguez (Eds.). La Bahía de La Paz investigación y conservación., Universidad Autónoma de Baja California Sur:201-236. Acknowledgements Ross Robertson, Smithsonian Tropical Research Institute I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page. Supported by National Biological Information Infrastructure National Science Foundation go to Discover Life's Facebook group Following modified from Australian Faunal Directory    Top | See original &pull 20q v5.145 20180528: Error 301 Moved Permanently http://biodiversity.org.au/afd/taxa/98c33d5e-a888-4e3d-99fe-31e0d8d9bae5 Following modified from FishBase    Top | See original http://www.fishbase.org/Summary/speciesSummary.php?genusname=Carcharhinus&speciesname=obscurus ---> http://52.67.158.155/Summary/speciesSummary.php?genusname=Carcharhinus&speciesname=obscurus http://52.67.158.155/Summary/speciesSummary.php?genusname=Carcharhinus&speciesname=obscurus ---> https://fishbase.net.br/Summary/speciesSummary.php?genusname=Carcharhinus&speciesname=obscurus https://fishbase.net.br/Summary/speciesSummary.php?genusname=Carcharhinus&speciesname=obscurus ---> https://fishbase.net.br/summary/Carcharhinus-obscurus.html You can sponsor this page Common name (e.g. trout) contains begins with begins with ends with is Genus + Species (e.g. Gadus morhua) About this page More Info Plus d'info Mais info Languages Arabic Bahasa/Malay Bangla Chinese(Si) Chinese(Tr) Deutsch English Español Farsi Français Greek Hindi Italiano Japanese Lao Nederlands Português(Br) Português(Pt) Russian Swedish Thai Vietnamese User feedbacks Comments &   Corrections Fish Forum Guest Book Facebook Citation Uploads Attach website Upload photo Upload video Upload   references Fish Watcher Related species Species in    Carcharhinus Species in    Carcharhinidae - Classification - Carcharhinidae Carcharhiniformes Elasmobranchii Chordata Animalia Carcharhinus obscurus ( Lesueur , 1818 ) Dusky shark Add your observation in Fish Watcher Native range | All suitable habitat | Point map | Year 2050 This map was computer-generated and has not yet been reviewed. Carcharhinus obscurus   AquaMaps   Data sources: GBIF OBIS Upload your photos  and  videos Pictures | Videos | Stamps, Coins Misc. | Google image Carcharhinus obscurus Picture by Randall, J.E. Classification / Names Common names | Synonyms | Catalog of Fishes( genus , species ) | ITIS | CoL | WoRMS | Cloffa Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks) Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus , an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. ( See ETYFish ) ;   obscurus: Latin for dark, probably referring to its darkish blue-gray body color. ( See ETYFish ) . More on author: Lesueur . Environment: milieu / climate zone / depth range / distribution range Ecology Marine; brackish; reef-associated; oceanodromous (Ref. 51243 ); depth range 0 - 400 m (Ref. 244 ), usually 200 - 400 m. Subtropical; 45°N - 46°S, 120°W - 156°E (Ref. 55186 ) Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri Western Atlantic: southern Massachusetts to Florida (USA), Georges Bank, Bahamas, Cuba, northern Gulf of Mexico, Nicaragua, southern Brazil and Uruguay (Ref. 58839 ). Eastern Atlantic: Canary Islands, Cape Verde, Senegal, Sierra Leone. Some records from the Mediterranean and Madeira may be based on Carcharhinus galapagensis . Indo-West Pacific: Red Sea (Ref. 5485 ), Mozambique and South Africa to Japan, China, Viet Nam and Australia. Eastern Pacific: southern California, USA to Gulf of California and the Revillagigedo Island. Highly migratory species. Length at first maturity / Size / Weight / Age Maturity: L m 249.5 , range 220 - 300 cm Max length : 420 cm TL male/unsexed; (Ref. 5578 ); common length : 250 cm TL male/unsexed; (Ref. 26999 ); max. published weight: 346.5 kg (Ref. 4699 ); max. reported age: 40 years (Ref. 31395 ) Short description Morphology | Morphometrics Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines : 0; Anal soft rays : 0. A large shark with a broadly rounded snout, triangular saw-edged upper teeth, curved moderate-sized pectoral fins, and an interdorsal ridge (Ref. 5578 ). Blue-grey, lead-grey above, white below; tips of pectoral and pelvic fins, as well as lower lobe of caudal fin and dorsal fins often dusky in young, plain in adults (Ref. 9997 ). Biology     Glossary (e.g. epibenthic) Found in coastal and offshore waters but not oceanic (Ref. 5578 ). Adults are commonly found at depths of 200-400 m, young in shallower waters (Ref. 5485 ). A seasonal migratory species over parts of its range (Ref. 6871 ). Common component of the catch of the shark longline fishery (Ref.58048). Feeds on bottom and pelagic bony fish, sharks, skates, rays, cephalopods, gastropods, crustaceans, sometimes mammalian carrion and inorganic objects (Ref. 5578 ). Viviparous (Ref. 50449 ); with litter size number from 3-14 (Ref. 27549 ). Large adults are potentially dangerous (Ref. 4716 , 6871 ). Utilized fresh, dried-salted, frozen and smoked for human consumption; hides for leather; fins for sharks-fin soup; and liver oil extracted for vitamins (Ref. 244 ). Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae Viviparous, with a yolk-sac placenta, litter size 3-14 pups (Ref. 244 ); 70-100 cm at birth (Ref. 6871 ). Gestation period of ~ 16 months (Ref.58048). 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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244 ) IUCN Red List Status (Ref. 130435 )   Endangered (EN)  (A2bd); Date assessed: 06 November 2018 CITES Appendix II: International trade monitored CMS (Ref. 116361 ) Appendix II: Migratory species conserved through agreements Threat to humans   Traumatogenic (Ref. 4690 ) Human uses Fisheries: commercial; gamefish: yes FAO - Fisheries: landings , species profile ; Publication: search | FishSource | Sea Around Us More information Countries FAO areas Ecosystems Occurrences Introductions Stocks Ecology Diet Food items Food consumption Ration Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Spawning aggregation Fecundity Eggs Egg development Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment Abundance BRUVS References Aquaculture Aquaculture profile Strains Genetics Electrophoreses Heritability Diseases Processing Nutrients Mass conversion Collaborators Pictures Stamps, Coins Misc. Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision Tools E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY | Special reports Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets Download XML Summary page | Point data | Common names | Photos 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 | GoMexSI (interaction data) | 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 ): 8.7 - 18.6, mean 12.6 °C (based on 736 cells). Phylogenetic diversity index (Ref. 82804 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00759 (0.00428 - 0.01346), b=3.08 (2.93 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  4.3   ±0.2 se; based on diet studies. Resilience (Ref. 120179 ):  Very Low, minimum population doubling time more than 14 years (rm=0.02; also Musick et al. 2000 (Ref. 36717 )). Prior r = 0.09, 95% CL = 0.06 - 0.13, Based on 1 stock assessment. Fishing Vulnerability (Ref. 59153 ):  Very high vulnerability (88 of 100). Climate Vulnerability (Ref. 125649 ):  High vulnerability (62 of 100). Price category (Ref. 80766 ):   Medium . Nutrients (Ref. 124155 ):  Calcium = 2.25 [0.42, 12.59] mg/100g; Iron = 0.295 [0.071, 0.898] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.163 [0.056, 0.425] g/100g; Selenium = 21.7 [6.3, 69.9] μg/100g; VitaminA = 24.1 [6.3, 93.0] μg/100g; Zinc = 0.398 [0.189, 0.797] mg/100g (wet weight); Comments & Corrections Back to Search Random Species Back to Top Accessed through: Not available FishBase mirror site : Laguna, Philippines Page last modified by : mrius-barile Updated: 2024-05-06 16:39:01 gmt Discover Life | Top © Designed by The Polistes Corporation