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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
More on author: Ahl.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক. Tropical; 9°S - 10°S
Africa: Lake Kiungululu [=Lake Chungruru], a small oligotrophic crater lake in the Rungwe Mountains in Tanzania (Ref. 54852, 118630, 118638), and probably Lake Masoko (Ref. 54852).
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.4 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 2)
পৃষ্ঠীয় কাঁটা (মোট ): 14 - 15; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ): 10-12; পায়ূ কাঁটা 3; পায়ূর নরম পাখনা্তুন্ড: 8 - 11; কশেরুকা : 30. Diagnosis: A relatively small bodied tilapia species; larger individuals were found to have large heads, thin bodies and an overall emaciated appearance, referred to as 'hunger form tilapia' (Ref. 118638). Length of head 37.6-40.5% of standard length; toothed area of lower pharyngeal with concave sides; median length of bone 1.0-1.24 times its width and 31.6-35.5% of head length; blade 1.2-1.4 times median length of toothed area; length of lower jaw 32.0-39.0% of head length; teeth of jaws in 4 or 5 rows (Ref. 2). Females and non-territorial males have grey bodies and 4-5 vertical bars; ventral region lighter; some juveniles very dark overall (Ref. 118638). Breeding males black with a thin white/orange dorsal margin (Ref. 2, 118638).
The maximum reported total length is 19.5 cm (Ref. 2, 118638); the maximum standard length of 19 cm (Ref. 4967) is not correct (G.F. Turner, pers. comm.). A maternal mouthbrooder; males defend territories in shallow water, digging a pit among branches and roots of reeds (Ref. 118638). Like Oreochromis hunteri, this species appears to be confined to a single lake without an outlet (Ref. 4967). The single population of this species is probably very small and vulnerable and is likely to support a sustainable fishery; the small adult size of the species would suggest minimal potential for aquaculture (Ref. 118638). Its IUCN conservation status is critically endangered, based on risk of siltation and water level fluctuations due to drought; in addition, populations are likely to have been impacted by the stocking of the lake with Coptodon rendalli and Tilapia sparrmanii, which are both presently abundant (Ref. 118638).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
A maternal mouthbrooder; males defend territories in shallow water, digging a pit among branches and roots of reeds (Ref. 118638).
Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
আরো তথ্য
সূত্র সংখ্যা এ্যাকুয়াকালচার (জলজ পালন) এ্যাকুয়াকালচার নকশা বংশ বংশানুগতিবিদ্যাElectrophoresesউতরাধিকার সুত্রে পাওয়া যোগ্যতারোগ প্রক্রিয়াজাতকরণ NutrientsMass conversion
সহযোগী ছবি সমূহStamps, Coins Misc.শব্দ ক্রোমোজোমের ধরণ গতি সাতাঁরের কায়দা ফুলকা এলাকাOtolithsমস্তিস্ক সমূহদৃষ্টি
হাতিয়ার
Special reports
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ইন্টারনেট সুত্র
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00827 - 0.04391), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
স্থিতিস্থাপক (Ref.
120179): উচ্চ, সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৫ মাস (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
