分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Mochokidae (Squeakers or upside-down catfishes) > Chiloglanidinae
Etymology: Chiloglanis: Greek, cheilos = lip + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335); orthodontus: A combination of the Greek word orthos, meaning straight or erect, and the Greek word odontos, meaning tooth; this name refers to the mandibular dentition in this species, which is relatively straight and evenly spread across the dentary as compared to most other members of the genus; used as a noun in apposition (Ref. 87986).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性.
Africa: several greatly separated sites in the lower Malagarasi River in Tanzania (Ref. 87986).
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 2.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 87986)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 2; 背的软条 (总数) : 5; 臀棘: 0; 臀鳍软条: 9 - 10; 脊椎骨: 32 - 34. Diagnosis: Chiloglanis orthodontus is a relatively small species, less than 30 mm standard length, that can be distinguished from all other Malagarasi congeners by possessing dentary teeth spread out across the mouth opening as opposed to being concentrated at the midline, and a very short dorsal spine, 4.1–7.8% of standard length vs. always greater than 8.2% (Ref. 87986). This species is further distinguished from all Lake Tanganyika region species except C. productus, by a relatively long adipose fin, 25.0–31.3% of standard length vs. less than 23.4% in all other Chiloglanis species except C. productus, which has 22.5– 26.2% (Ref. 87986). Additional features useful for distinguishing this species from other species of Chiloglanis include a relatively small oral disc, width 16.5-21.7% of standard length and length 12.1-16.3% of standard length, with relatively elongate barbels, maxillary barbel 9.4-14.8% of standard length, lateral mandibular barbel 3.8-10.7% of standard length, medial mandibular barbel 3.8-5.9% of standard length (Ref. 87986). These features and the widely spaced teeth of the lower jaw are associated with another distinctive character in this species: the shape of the lower jaw; in most species of Chiloglanis the lower jaw is similar to that found in species of Synodontis, where elongate 'S'-shaped teeth insert in a cavity on the anterior side of the dentary; in C. orthodontus the dentary tooth cup is poorly developed; the dentary teeth project from the anterodorsal surface of the dentary and are only very gently 'S'-shaped; thus far among Chiloglanis species, only Chiloglanis voltae, known from the Volta and upper Bénoué River basins in western Africa, possesses a similar jaw morphology (Ref. 87986).
It is most commonly encountered in small riffles, or in peripheral regions of rapids where the water velocity is much slower (Ref. 87986).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Friel, J.P. and T.R. Vigliotta, 2011. Three new species of African suckermouth catfishes, genus Chiloglanis (Siluriformes: Mochokidae), from the lower Malagarasi and Luiche rivers of western Tanzania. Zootaxa 3063:1-21. (Ref. 87986)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
人类利用
渔业: 没有兴趣
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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=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
