分類 / 名前
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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Petrotilapia: Latin,petra = stone + Bechuana, African native thiape = fish (Ref. 45335); palingnathos: The name palingnathos, from the Greek pálin, meaning back or backwards, and gnáthos, meaning mouth or jaw, referring to the shorter lower jaw; a noun in apposition (Ref. 87181).
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 外洋の. Tropical; 12°S - 13°S, 34°E - 35°E
Africa: Lake Malawi in Malawi and Mozambique (Ref. 87181).
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 11.8 cm SL オス/雌雄の選別がない; (Ref. 87181)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 17 - 18; 背鰭 (合計) : 8 - 10; 肛門の骨: 3; 臀鰭: 7 - 8. Diagnosis: Adult male and female Petrotilapia palingnathos have distinctly retrognathous jaws and can thus be distinguished from all other members of Petrotilapia (Ref. 87181). Furthermore, the absence of a dark submarginal band in the dorsal fin distinguishes P. palingnathos from P. microgalana, P. genalutea, P. nigra, P. chrysos, P. mumboensis, and P. pyroscelos, which have such a band (Ref. 87181). Adult males of P. palingnathos are dark gray with orange markings and scales outlined in blue with orange cheek and a blue gular area, which distinguishes them from P. tridentiger, which are light blue with dark blue bars, and from males of P. xanthos which are yellow, while those of P. flaviventris are yellow on ventral and mid-sides with scales outlined in blue (Ref. 87181).
Body shape (shape guide): fusiform / normal.
Normally found in the shallow but not wave-washed habitat (Ref. 87181).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Lundeba, M., J.R. Stauffer Jr. and A. F. Konings, 2011. Five new species of the genus Petrotilapia (Teleostei: Cichlidae), from Lake Malawi, Africa. Ichthyol. Explor. Freshwat. 22(2):149-168. (Ref. 87181)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照 82804) |
PD50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01445 (0.00671 - 0.03113), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
栄養段階 (参照 69278) |
3.4 ±0.4 se; based on size and trophs of closest relatives |
回復力 (参照 120179) |
高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.). |
漁業の脆弱性 (Ref. 59153) |
Low vulnerability (16 of 100). 🛈 |