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Oreochromis aureus (Steindachner, 1864)
Blue tilapia
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Oreochromis aureus
Picture by CAFS
Pictures | Google image
Picture by CAFS
French Polynesia country information
Common names:
[No common name]
Occurrence: introduced
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: commercial | Ref: FAO, 2002
Regulations: | Ref:
Uses: no uses
Comments: Not encountered in the wild (Philippe Keith, pers. com.).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/fp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: FAO, 2002
National Database:
Occurrence: introduced
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: commercial | Ref: FAO, 2002
Regulations: | Ref:
Uses: no uses
Comments: Not encountered in the wild (Philippe Keith, pers. com.).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/fp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: FAO, 2002
National Database:
Common names from other countries
Classification / Names প্রচলিত নাম সমূহ | প্রতিনাম সমূহ | Catalog of Fishes(গণ , প্রজাতি ) | ITIS | CoL | WoRMS | Cloffa
> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
More on author: Steindachner.
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
More on author: Steindachner.
Environment: milieu / climate zone / depth range / distribution range বাস্তুসংস্থান
; স্বাদু পানি; ঈষৎ লোনা সমুদতলে ভাসমান বেনথোপেলাজিক; পোটামোড্রোমাস (Ref. 51243); গভীরতার পরিসীমা 5 - ? m. Tropical; 8°C - 30°C (Ref. 2); 35°N - 10°N
বিতরণ দেশ সমূহ | এফ এ ও এলাকাসমূহ | বাস্তুতন্ত্র | দৃষ্টিগোচর | Point map | প্রচলন | Faunafri
Africa and Eurasia: Jordan Valley, Lower Nile, Chad Basin, Benue, middle and upper Niger, Senegal River (Ref. 21). Introduced in the oasis of Azraq (Jordan) as well as in warm water ponds of USA, South and Central America and South East Asia. At least one country reports adverse ecological impact after introduction.
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm 19.0, range 13 - 20 cm
Max length : 45.7 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 40637); common length : 16.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 12193); সবের্াচ্চ প্রকাশিত ওজন : 2.0 kg (Ref. 40637)
Max length : 45.7 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 40637); common length : 16.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 12193); সবের্াচ্চ প্রকাশিত ওজন : 2.0 kg (Ref. 40637)
Short description সনাক্তকারী নির্দেশক | বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স
পৃষ্ঠীয় কাঁটা (মোট ) : 14 - 17; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 11 - 15; পায়ূ কাঁটা : 3; পায়ূর নরম পাখনা্তুন্ড: 8 - 11; কশেরুকা : 28 - 31. Diagnosis: Adults: narrow preorbital bone (depth max. 21.5% of head length in fishes up to 21.3cm SL); lower pharyngeal jaw with short blade; no enlargement of the jaws in mature fish (lower jaw not exceeding and usually less than 36.8% head length) (Ref. 2). Caudal without regular dark vertical stripes (Ref. 2, 53405, 54467), but with a broad pink to bright red distal margin (Ref. 2). Breeding males assume an intense bright metallic blue on the head, a vermilion edge to the dorsal fin and a more intense pink on the caudal margin (Ref. 2, 54467). Breeding females with the edges of dorsal and caudal fins in a paler more orange color (Ref. 2). Juveniles: upper line of head profile running upward from snout at sharp angle; lower pharyngeal bone nearly triangular, teeth numerous but not densely crowded; dorsal and anal fin striped, with stripes running obliquely on the soft dorsal and longitudinally on the caudal fin; black Tilapia-mark on soft dorsal present; body dark; lower lip developed from beneath (Ref. 54566).
Cold tolerant (Ref. 23, 61, 55352), occuring at temperatures ranging from 8°-30°C (Ref. 2), tolerating up to 41 °C (Ref. 23). Tolerates fairly brackish conditions (Ref. 3, 23, 61, 2001, 6465, 54362). Forms schools; is sometimes territorial; inhabits warm ponds and impoundments as well as lakes and streams (Ref. 5723, 11028), in open water as well as among stones and vegetation (Ref. 11028). Feeds on phytoplankton and small quantities of zooplankton (Ref. 3, 61, 6465, 52307). Young fish have a more varied diet which includes large quantities of copepods and cladocerans (Ref. 2, 61, 6465), but they also take pieces of small invertebrates (Ref. 52307). Ovophilic, agamous (Ref. 52307), maternal mouthbrooder (Ref. 364, 52307). Sexual maturity in ponds reached at age of 5-6 months (Ref. 55352). Reproduces in both fresh and brackish water (Ref. 61, 5723). Good taste (Ref. 61).
Life cycle and mating behavior পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Nesting usually in shallow water weedy areas (Ref. 96). Males establish territory and dig a spawning pit (Ref. 2, 6465, 54601), using mouth and fins (Ref. 2), up to 60cm deep and 4-6m in diameter; a number of territories can often be found clustered together (Ref. 52307). Territories are defended by means of agressive behaviour (Ref. 6465), including lateral display, lateral biting and mouth-to-mouth combat (Ref. 2). Reproduction is stimulated by long photoperiods and inhibited by short daylengths (Ref. 54365). Reproduction requires a minimum temperature of about 20°C (Ref. 2). Males visit schools of females and attempt to attract a female spawning partner (Ref. 2, 52307). Courting behaviour in the nest consists of lateral display by both sexes with nipping and tail-flapping (Ref. 2). Eggs are deposited in single clutches, from several dozen to 100 eggs (Ref. 52307), and are taken into the females mouth as soon as they are fertilized (Ref. 2, 6465, 52307), with a peak spawning frequency around the 9-11th hour of light (Ref. 31140, 54365). One female may hold up to 2000 eggs in her mouth (Ref. 2). The female swims away to deeper water with the brood after spawning is complete (Ref. 2, 52307), while the male renews spawning activities with another female. Hatching occurs about 3 days after oviposition (Ref. 2). Incubation time varies with temperature, 13-14 days at 25-27°C (Ref. 2, 52307) or 8-10 days at 29°C (Ref. 144), and juveniles leave the mother's mouth when they are about 1.1cm in length (Ref. 54601). The young school near parent's head for a few days, reentering the mouth at any sign of danger or at a gesture of the female; parent-offspring relationship ceases after 5 days (Ref. 2).
Main reference
Upload your references | সূত্র সংখ্যা | সমম্বয়কারী : Kullander, Sven O. | সহযোগী
Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)
Human uses
মৎস্য: অত্যন্ত বাণিজ্যিক ; এ্যাকুয়াকালচার (জলজ পালন) : বাণিজ্যিক; শিকারযোগ্য মাছ: হঁ্যা ; মৎস্যাধার / এ্যাকুয়ারিয়াম : বাণিজ্যিক; স্পশর্ী : usually
FAO(Aquaculture systems: উৎপাদন ; মৎস্য: উৎপাদন ; publication : search) | FishSource |
আরো তথ্য
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
নির্বাচন
প্রাচুর্য
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
নির্বাচন
প্রাচুর্য
Life cycle
প্রজনন
পরিপক্কতা
ডিম্বধারন ক্ষমতা
ডিম ছাড়া
Spawning aggregations
ডিমসমূহ
Egg development
শুককীট
শুককীটের সত্রিুয়তা
প্রজনন
পরিপক্কতা
ডিম্বধারন ক্ষমতা
ডিম ছাড়া
Spawning aggregations
ডিমসমূহ
Egg development
শুককীট
শুককীটের সত্রিুয়তা
Anatomy
ফুলকা এলাকা
Brain
Otolith
ফুলকা এলাকা
Brain
Otolith
Physiology
Body composition
Nutrients
অম্লজান ব্যবহার
-এর সাতাঁরের ধরণ
সাতাঁরের গতি
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
অম্লজান ব্যবহার
-এর সাতাঁরের ধরণ
সাতাঁরের গতি
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Human related
Aquaculture systems
একুয়াকালচার নকশাসমূহ
বংশ
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
একুয়াকালচার নকশাসমূহ
বংশ
Ciguatera cases
Stamps, coins, misc.
হাতিয়ার
E-book | মাঠ পর্যায়ের নির্দেশক | সনাক্তকারী নির্দেশক | দৈঘ্যর্ের ঘটন সংখ্যা জাদুকর | জীবন ইতিহাস হাতিয়ার | মানচিত্র নির্দেশ করুন | Classification Tree
| Catch-MSY |
Special reports
Download XML
ইন্টারনেট সুত্র
Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(গণ , প্রজাতি ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | জাতীয় উপাত্ত সমূহ | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | জীবন বৃক্ষ | Wikipedia(Go, অনুসন্ধান ) | World Records Freshwater Fishing | জুলজিকাল রেকর্ড
Estimates based on models
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.01356 - 0.02227), b=2.99 (2.95 - 3.03), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
ট্রফিক পর্যায়ে (Ref. 69278): 2.1 ±0.0 se; based on diet studies.
স্থিতিস্থাপক (Ref. 120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (K=0.48-0.58; tm<1).
Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (26 of 100).