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) > Ptychochrominae
Etymology: Ptychochromis: Greek, ptyx, = fold + Greek, chromis = a fish, perhaps a perch (Ref. 45335); onilahy: Named after the basin in which the types were collected (Ref. 57663).
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的.
Africa: Madagascar.
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 8.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 57663)
背棘 (總數) : 13; 背的軟條 (總數) : 12; 臀棘: 3; 臀鰭軟條: 8 - 9; 脊椎骨: 26 - 27. It is distinguished from all congeners by the presence of a lachrymal plate that extends ventrally to cover a portion of the upper lip (Ref. 57663). Body deep and laterally compressed (Ref. 57663). Two inner rows of teeth in both upper and lower jaws (Ref. 57663). It has cycloid scales above the upper lateral line on the flanks (Ref. 57663). In life, adults are uniformly gray brown, paler ventrally and lacking any obvious body markings (Ref. 57663). In preservative, the ground coloration is brownish to golden-brown, lighter ventrally, and all fins are brownish (Ref. 57663).
Body shape (shape guide): short and / or deep.
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Stiassny, M.L.J. and J.S. Sparks, 2006. Phylogeny and taxonomic revision of the endemic Malagasy genus Ptychochromis (Teleostei: Cichlidae), with the description of five new species and a diagnosis for Katria, new genus. Am. Mus. Novit. 3535:1-55. (Ref. 57663)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
滅絕 (EX) ; Date assessed: 15 May 2016
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
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.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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