分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei > Cichliformes (Cichlids, convict blennies) 鱸形目 (Cichlids, convict blennies) > Cichlidae (Cichlids) 麗魚科 (Cichlids) > Pseudocrenilabrinae
Etymology: ejagham: The species name ejagham refers both to Lake Ejagham as well as to the Ejagham people, whose major sacred site is Lake Ejagham; a noun in apposition (Ref. 85854).
Etymology: ejagham: The species name ejagham refers both to Lake Ejagham as well as to the Ejagham people, whose major sacred site is Lake Ejagham; a noun in apposition (Ref. 85854).
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
; 淡水 底中水层性.
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Africa: Lake Ejagham in Cameroon (Ref. 85854).
大小 / 重量 / 年龄
简单描述 检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 15 - 16; 背的软条 (总数) : 10 - 12; 臀棘: 3; 臀鳍软条: 8 - 10. Diagnosis: Coptodon ejagham differs from Tilapia species, except Coelotilapia joka and Congolapia bilineata, and all members of the genus Coptodon in tricuspid, rarely quadricuspid, pharyngeal teeth in the posterior two rows of lower pharyngeal jaw (Ref. 85854). It differs from Coelotilapia joka in more gill rakers on first ceratobranchial, 9-10 vs. 6-8; from Congolapia bilineata in not having a densely scaled caudal fin; it differs from Coptodon walteri, C. rendalli, C. congica and C. dageti in lower body depth, 33.8-40.6% of standard length vs. 41.4-51.3%; from C. cameronensis in lesser number of dorsal rays, 10-12 vs. 13-14; from C. kottae in narrower interorbital width, 9.2-12.2% of standard length vs. 12.4-14.0%; from C. imbriferna in shorter head length, 32.6-39.7% of standard length vs. 40.1-42.6%; from C. thysi in higher number of gill rakers on first ceratobranchial, 9-10 vs. 7-8; from C. snyderae in longer snout length, 13.5-16.9% of standard length vs. 11.3-13.3%; from C. bakossiorum in higher cheek depth, 12.0-15.4% of standard length vs. 8.7-11.2%; from C. bythobates in shorter caudal peduncle length, 12.6-15.7% of standard length vs. 15.9-17.5%; from C. guineensis, C. margaritacea, C. discolor, C. tholloni, C. flava, and C. gutturosa in a lower caudal peduncle depth, 13.0-15.1% of standard length vs. 15.2-19.2%; from C. ismailiaensis, C. camerunensis, C. coffea, C. louka, and C. nyongana in greater lower jaw length, 12.4-16.2% of standard length vs. 7.8-12.2%; and from C. bemini in robust, non-spatulate outer row jaw teeth, vs. gracile spatulate teeth (Ref. 85854). It differs from C. deckerti in shorter eye length, 6.2-8.4% of standard length vs. 8.5-10.7%; from C. nigrans in flank scales with dark scale margins and a light centre, especially on scales below the lateral line, vs. dark square-shaped blotches at base of each flank scale, filled or with a light coloured window at centre of blotch; and from C. fusiforme in greater snout length, 13.5-16.9% of standard length vs. 10.3-13.3% (Ref. 85854). Coptodon spongotroktis is distinguishable by combination of characters: interorbital width, lower jaw length and caudal peduncle length; C. zillii is distinguished by a combination of characters: anal spine length, length of last dorsal spine, snout length, lower jaw length, caudal peduncle depth and head length (Ref. 85854).
Body shape (shape guide): fusiform / normal.
Body shape (shape guide): fusiform / normal.
Pairs breed exclusively in the shallow inshore region above 2 m; pairs excavate large nest-pits under large branches or logs (Ref. 85854). Non-breeding Coptodon ejagham are moving solitarily and are and appear to permanently scan their environment for prey while swimming permanently without a hast, and rarely being motionless (Ref. 85854). Observations suggest that this species are predators of small fish, mostly juvenile cichlids (Ref. 85854).
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 : Kullander, Sven O. | 合作者
Dunz, A.R. and U.K. Schliewen, 2013. Molecular phylogeny and revised classification of the haplotilapiine cichlid fishes formerly referred to as "Tilapia". Mol. Phylogenet. Evol. 68(1):64-80. (Ref. 93285)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
极度濒危 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 09 March 2023
CITES
Not Evaluated
对人类的威胁
人类利用
FAO - Publication: search | FishSource |
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解剖学
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生理学
身体成分
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视觉色素
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疾病与寄生虫
毒性（半数致死浓度）
身体成分
营养素
耗氧量
游泳类型
游泳速度
视觉色素
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疾病与寄生虫
毒性（半数致死浓度）
遗传学
基因组
遗传学
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基因多样性
基因组
遗传学
异质性
遗传率
基因多样性
工具
特别资料
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网络资源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes: 属, 种 | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 树状分类阶层 | Wikipedia: 转至, 搜寻 | World Records Freshwater Fishing | 动物学的记录
基于模型的估算
|
系统发育多样性指数 (参考文献 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). |
|
营养阶层 (参考文献 69278) |
2.5 ±0.1 se; based on size and trophs of closest relatives |
|
回复力 (参考文献 120179) |
高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.). |
|
渔业脆弱性 (Ref. 59153) |
Low to moderate vulnerability (27 of 100). 🛈 |