Oreochromis grahami (Boulenger, 1912)
Magadi tilapia
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Oreochromis grahami
Male 拍攝者 Seegers, L.
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Male 拍攝者 Seegers, L.
分類 / 名稱 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Cichliformes (Cichlids, convict blennies) 鱸形目 (Cichlids, convict blennies) > Cichlidae (Cichlids) 慈鯛科魚類 (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Eponymy: J W Graham (no other information available) collected the type in a hot soda lake in Kenya. (Ref. 128868), visit book page.
More on author: Boulenger.
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
Eponymy: J W Graham (no other information available) collected the type in a hot soda lake in Kenya. (Ref. 128868), visit book page.
More on author: Boulenger.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
; 淡水 底中水層性; pH range: 7.5 - 8.5; dH range: 10 - 20. 熱帶; 24°C - 32°C (Ref. 2060); 1°S - 2°S
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Africa: Lake Magadi in Kenya (Ref. 52331). Introduced in Lake Nakuru and Lake Elmenteita, both in Kenya (Ref. 52331). Reported as introduced to Lake Natron in Tanzania (Ref. 13364), but there is currently no evidence that any introduction led to establishment of breeding populations (Ref. 118638).
非洲: 在肯亞 (參考文獻 3881) 與湖天然碳酸鈉在坦尚尼亞的湖 Magadi 與 Nakuru(引入).(參考文獻 13364)
非洲: 在肯亞 (參考文獻 3881) 與湖天然碳酸鈉在坦尚尼亞的湖 Magadi 與 Nakuru(引入).(參考文獻 13364)
初熟時的長度 / 大小 / 重量 / 年齡
簡短描述 檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 11 - 13; 背的軟條 (總數) : 12 - 13; 臀棘: 3; 臀鰭軟條: 9 - 11; 脊椎骨: 28. Mature females with an overall golden hue; males with the flanks a pale blue. Swollen and brilliant white lateral parts of the lower lip of the mature male. Blue spots on scales becoming iridescent. Genital papilla conical, prominent and yellow in the mature male; swollen in the mature female. An oblique eye-bar intensely black in the breeding male, duller in the female.
Body shape (shape guide): short and / or deep; Cross section: compressed.
成熟的雌性有一個整體的金色; 雄性有側面藍灰色。 成熟雄魚的下面唇的腫大而色彩豔麗白色側面部份。 在變成彩虹色的鱗片上的藍色的斑點。 生殖乳突錐形﹐突出的與黃色的在成熟的雄魚中; 腫大的在成熟的母魚中。 一個斜的眼-橫帶密集黑色在繁殖期的雄魚中, 比較遲鈍的在母魚中。
Body shape (shape guide): short and / or deep; Cross section: compressed.
成熟的雌性有一個整體的金色; 雄性有側面藍灰色。 成熟雄魚的下面唇的腫大而色彩豔麗白色側面部份。 在變成彩虹色的鱗片上的藍色的斑點。 生殖乳突錐形﹐突出的與黃色的在成熟的雄魚中; 腫大的在成熟的母魚中。 一個斜的眼-橫帶密集黑色在繁殖期的雄魚中, 比較遲鈍的在母魚中。
Facultative air-breathing (Ref. 126274); Occur at temperatures ranging from 16.0-40.0 °C (Ref. 2). Feed actively in the evening. Young O. alcalicus grahami eat eggs as they are shed by the female, and much of the time and energy of the territorial male is occupied in driving them off. Feed on invertebrates, at the surface (Ref. 2).
生存在溫度範圍從 16.0-40.0 °C 。 (參考文獻 2) 晚上為食活躍地。 當他們被母魚流出的時候，幼魚 O. alcalicus grahami 吃卵，而且許多時間與具有領域性雄魚的能源在使他們外海方面被佔領。 捕食無脊椎動物, 在水表面。 (參考文獻 2)
生存在溫度範圍從 16.0-40.0 °C 。 (參考文獻 2) 晚上為食活躍地。 當他們被母魚流出的時候，幼魚 O. alcalicus grahami 吃卵，而且許多時間與具有領域性雄魚的能源在使他們外海方面被佔領。 捕食無脊椎動物, 在水表面。 (參考文獻 2)
生命週期和交配行為 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Male prepares a breeding pit, the structure of which may vary with the nature of the substratum. Breeding activities are more actively pursued by both sexes in the morning than in the afternoon. Female lays about 3-10 eggs at a time, picks them up instantly and the male swims with his genital papilla near the mouth, probably emitting sperm. Brooding period reportedly 12-16 days. 非洲: 在肯亞 (參考文獻 3881) 與湖天然碳酸鈉在坦尚尼亞的湖 Magadi 與 Nakuru(引入).(參考文獻 13364)
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 : Kullander, Sven O. | 合作者
Seegers, L. and H. Tichy, 1999. The Oreochromis alcalicus flock (Teleostei: Cichlidae) from lakes Natron and Magadi, Tanzania and Kenya, with descriptions of two new species. Ichthyol. Explor. Freshwat. 10(2):97-146. (Ref. 32272)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
瀕危 (EN) (B1ab(i,ii,iii)); Date assessed: 16 June 2022
CITES
Not Evaluated
對人類具威脅
無害處的
人類使用
水族館: 商業性
FAO - Publication: search | FishSource |
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網路資源
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基於模型的估計
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系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01862 (0.00830 - 0.04177), b=3.02 (2.83 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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營養階層 (參考文獻 69278) |
2.8 ±0.28 se; based on food items. |
|
回復力 (參考文獻 120179) |
高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.). |
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釣魚的脆弱性 (Ref. 59153) |
Low to moderate vulnerability (27 of 100). 🛈 |