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) > Ptychochrominae
Etymology: Ptychochromis: Greek, ptyx, = fold + Greek, chromis = a fish, perhaps a perch (Ref. 45335); ernestmagnusi: Named in honor of Mr. Ernest Magnus of Berlin, Germany, and New York City, at the request of the family of Dr. Rudolph G. Arndt, whose support of ichthyological exploration and research at the American Museum of Natural History is gratefully acknowledged (Ref. 83427).
Eponymy: Ernest Magnus (1908–1983) was honoured at the request of the family of Rudolf G Arndt, a German-American marine biologist and ichthyologist, whose ‘generous gift’ supported the authors’ research (Magnus was Arndt’s uncle and was instrumental in help [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性.
Africa: Mananara (du nord) River in northeastern Madagascar (Ref. 83427).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 14.7 cm SL 雄魚/尚未辨別雌雄; (Ref. 83427)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 12 - 13; 背的軟條 (總數) : 11 - 13; 臀棘: 3; 臀鰭軟條: 7 - 9; 脊椎骨: 27 - 28. Diagnosis: Ptychochromis ernestmagnusi is a Ptychochromis exhibiting the eastern-type palatine morphology and is further distinguished from all congeners except P. grandidieri, P. loisellei, P. makira and P. curvidens by an anterior displacement of the first supraneural such that it overlies the dorsoposterior margin of the supraoccipital (Ref. 83427). Among eastern group Ptychochromis, P. makira shares with P. ernestmagnusi the possession of supraneurals with a characteristically flattened dorsal profile, which is interpreted here as a synapomorphy uniting these two geographically proximate species; also shared with P. makira is the presence of strong, paired, lateral barring as a prominent component of pigmentation patterning; however, P. makira can be distinguished by distinctively V-shaped lateral flank bars, whereas in P. ernestmagnusi the bars are oriented vertically; Ptychochromis ernestmagnusi is further distinguished from P. makira by conspicious iridescent spangling on the flank and dorsal fin near its base, dusky grayish-green base colouration vs. whitish, four lachrymal laterosensory foramina vs. three, and a total of seven infraorbital bones vs. six (Ref. 83427).
Found in a region which is characterized by humid, lowland rainforest; with a steep overall profile, and a generally rocky to sandy substrate (Ref. 83427).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Sparks, J.S. and M.L.J. Stiassny, 2010. A new species of Ptychochromis from northeastern Madagascar (Teleostei: Cichlidae), with an updated phylogeny and revised diagnosis for the genus. Zootaxa 2341:33-51. (Ref. 83427)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
人類使用
工具
特別的報告
下載 XML
網路資源
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 ±0.5 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).
