分类 / 名称
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Teleostei >
Siluriformes (Catfishes) >
Auchenoglanididae (Flatnose catfishes)
Etymology: Notoglanidium: Greek, noton = back + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish; diminutive (Ref. 45335); akiri: Named in honour of P.J. Akiri, collector of the type specimens (Ref. 94168).
Eponymy: Pamela Jeanne Akiri (b: 1944) is an American biologist who moved to Nigeria with her husband and worked at Rivers State University of Science and Technology, Port Harcourt, Nigeria. She collected the catfish holotype. (Ref. 128868), visit book page.
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 居于水底的. 熱帶
Africa: Niger Delta and the neighbouring New Calabar River, Bonny River and Imo River in southern Nigeria (Ref. 7324, 50225, 57126, 94168).
非洲: 在奈及利亞南部的顯然是尼日三角州與附近的新 Calabar 與漂亮的河的特有種。
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 10.7 cm SL 雄鱼/尚未辨别雌雄; (Ref. 50225)
背棘 (总数) : 2; 背的软条 (总数) : 7; 臀棘: 0; 臀鳍软条: 10 - 13; 脊椎骨: 36. Diagnosis: Notoglanidium akiri differs from other species in the genus in having: an average interorbital distance, 24.1-32.8% of head length vs. smaller in N. boutchangai, N. depierrei, N. pallidum and N. pembetadi, and larger in N. maculatum and N. thomasi; a large eye diameter, 6.6-10.5% of head length vs. smaller in N. maculatum and N. pallidum; a deep adipose fin, 4.7-7.3% of standard length vs. less deep in other species except N. macrostoma and N. walkeri; an average combined premaxillary tooth plate width, 22.0-26.1% of head length vs. broader in N. boutchangai and N. macrostoma and smaller in allother species except N. depierrei and N. pembetadi; only seven soft branched dorsal-fin rays, vs. more than 8 in N. depierrei, N. maculatum, N. pallidum, N. pembetadi, N. thomasi and N. walkeri; and a high dorsal-fin spine length, 9.8-12.8% of standard length vs. shorter in all other species except N. macrostoma (Ref. 94168).
Body shape (shape guide): fusiform / normal.
头部与身体一般扁平的。 (最大的身体高度 19-25% 的 SL) 吻宽的; 上颌骨前的齿碟宽的, 测量 22-27% 的 HL。 鳃盖薄膜完全地融合了。 腹鳍 i,5; 臀鳍 iii- iv,7-9; 尾鳍 16-18.(参考文献 50225)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: 在奈及利亞南部的顯然是尼日三角州與附近的新 Calabar 與漂亮的河的特有種。
Geerinckx, T., E. Vreven, M. Dierick, L.V. Hoorebeke and D. Adriaens, 2013. Revision of Notoglanidium and related genera (Siluriformes: Claroteidae) based on morphology and osteology. Zootaxa 3691(1):165-191. (Ref. 94168)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
濒危 (EN) (B1ab(i,ii,iii)+2ab(i,ii,iii)); Date assessed: 20 August 2019
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基于模型的估算
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00955 (0.00512 - 0.01780), b=2.98 (2.81 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
营养阶层 (参考文献 69278) |
3.4 ±0.5 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 vulnerability (13 of 100). 🛈 |