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Maylandia usisyae (Li, Konings & Stauffer, 2016)

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drawing shows typical species in Cichlidae.

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分类 / Names 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: Maylandia: In honour of Hans J. Mayland, German ictiologist (Ref. 45335);  usisyae: The specific epithet usisyae is the genitive of Usisya, the village near which the type specimens were collected (Ref. 119465).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 淡水 底中水层性.   

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Africa: Lake Malawi in Malawi (Ref. 119465).

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 7.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 119465)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 17 - 18; 背的软条 (总数): 8-9; 臀棘 3; 臀鳍软条: 7 - 8. Diagnosis: The presence of bicuspid teeth in the outer rows on both the upper and lower jaws and a moderately sloped vomer block with a swollen rostral tip place this species in Maylandia (Ref. 119465). Male and female M. usisyae are distinguished by an elongate body, body depth 25.9-30.6% of standard length, from all other species in Maylandia, body depth 28.8-40.8% of standard length, except M. tarakiki, body depth 25.8-32.9% of standard length, and M. flavicauda, body depth 23.6-28.5% of standard length (Ref. 119465). It differs from M. tarakiki by a smaller eye, vertical eye diameter 23.1-28.1% of head length vs. 30.2-36.5% in M. tarakiki; and a shorter lower jaw length, lower jaw length 29.9-33.4% of head length vs. 34.8-38.9% on M. tarakiki (Ref. 119465). Based on the colour pattern, male M. usisyae possess a yellow dorsal fin with a black submarginal band, yellow pelvic fins and yellow anal fin with a black leading edge; male M. flavicauda possess black pelvic and anal fins, and a black dorsal fin with yellow/orange spots distally; the ground colouration of male M. flavicauda is blue with 2 light/purple interorbital bars vs. yellow with 2 white/light blue interorbital bars in male M. usisyae; females of M. usisyae cannot reliably be distinguished by colour from those of M. flavicauda; Maylandia flavicauda also possess a deeper preorbital bone, preorbital depth 18.0-26.9% of head length, and a longer snout, snout length 34.3-47.3% of head length, which are 17.6-21.2% and 32.0-37.6% in M. usisyae respectively (Ref. 119465).

生物学特性     字汇 (例如 epibenthic)


Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 : Kullander, Sven O. | 合作者

Li, S., A.F. Konings and J.R. Stauffer Jr., 2016. A revision of the Pseudotropheus elongatus species group (Teleostei: Cichlidae) with description of a new genus and seven new species. Zootaxa 4168(2):353-381. (Ref. 119465)

世界自然保护联盟红皮书 (Ref. 130435)

  极度濒危 (CR) (B1ab(v)+2ab(v)); Date assessed: 21 May 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

 




人类利用

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
营养阶层 (Ref. 69278):  2.3   ±0.1 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).