分類 / Names
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) > Pseudocrenilabrinae
Etymology: Petrotilapia: Latin,petra = stone + Bechuana, African native thiape = fish (Ref. 45335); xanthos: The name xanthos, from the Greek, meaning yellow referring to the yellow breeding color of males; a noun in apposition (Ref. 87181).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性. ; 10°S - 11°S, 34°E - 35°E
Africa: Gallireya Reef in Lake Malawi, Malawi (Ref. 87181).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 13.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 87181)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 17 - 19; 背的軟條 (總數) : 6 - 10; 臀棘: 3; 臀鰭軟條: 7 - 9. Diagnosis: The absence of a dark submarginal band in the dorsal fin distinguishes Petrotilapia xanthos 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. xanthos are yellow, which distinguishes them from P. tridentiger, which are light blue with dark blue bars; they are also distinct from those of P. flaviventris, and P. palingnathos; males of P. flaviventris are yellow on ventral and mid flank with scales outlined in blue; the dorsal one-third is blue to gray with yellow and orange highlights; cheeks and throat yellow to orange; adult male, and female, P. palingnathos have distinctly retrognathous jaws and can thus be distinguished from those of P. xanthos (Ref. 87181). Females of P. xanthos are light brown, which distinguishes them from those of P. tridentiger, which are brown, from P. chrysos and P. microgalana, which are golden yellow, from those of P. flaviventris, which are yellow brown with interrupted black stripes and fading to dark brown dorsally; the melanin pattern in females of P. xanthos have both horizontal and vertical elements, which distinguishes them from those of P. chrysos, which lack a distinct melanin pattern and are completely yellow, and from P. microgalana and P. flaviventris, which have no vertical elements in their melanin pattern (Ref. 87181).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
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 瀕危狀態 (Ref. 130435: Version 2024-2)
近危 (NT) (B1a+2a); Date assessed: 22 June 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5010 [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).
營養階層 (Ref.
69278): 3.4 ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
