分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cyprinodontiformes (Rivulines, killifishes and live bearers)
鱂形目 (Rivulines, killifishes and live bearers) >
Poeciliidae (Poeciliids)
花鱂科 (Poeciliids) > Poeciliinae
Etymology: Phalloceros: Greek, phallos = penis + Greek, keras = horn (Ref. 45335); leptokeras: From the Greek leptos meaning strait, narrow plus kéras meaning horn, alluding to the slender gonopodial appendix. leptokeras is a
noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性. ; 22°S - , 42°W -
South America: Brazil: Middle portions of rio Paraíba do Sul drainage (Ref. 76852).
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 2.4 cm SL 雄魚/尚未辨別雌雄; (Ref. 76852); 3.7 cm SL (female)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 8; 臀鰭軟條: 8 - 11; 脊椎骨: 32 - 33. Distinguished by the following uniquely derived autapomorphy: typical densely pigmented rectangle like lateral spot located on the 14th or 15th (very rarely 16th) scale of longitudinal line. Can be readily differentiated from its congeners, except Phalloceros tupinamba and Phalloceros aspilos, by the presence a lateral ramus of the female urogenital papilla; female urogenital papilla left turned; large sickle like hook on the gonopodial appendix located in its inner surface and close to its base; and absence of vertical bars along body sides. Phalloceros leptokeras can be distinguished from Phalloceros aspilos by the presence of lateral spot (vs. spot absent). Phalloceros leptokeras can be distinguished from P. tupinamba by the flattened female urogenital papilla (vs. not-flattened in Phalloceros tupinamba) and by the lateral spot densely pigmented, rectangle like, horizontally covering the length corresponding to two or three scales length (vs. normally pigmented, vertically elongated, and horizontally covering the length corresponding to the length of one scale in Phalloceros tupinamba) (Ref. 76852).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
Lucinda, P.H.F., 2008. Systematics and biogeography of the genus Phalloceros Eigenmann, 1907 (Cyprinodontiformes: Poeciliidae: Poeciliinae), with the description of twenty-one new species. Neotrop. Ichthyol. 6(2):113-158. (Ref. 76852)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 07 November 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00354 - 0.01865), b=3.16 (2.97 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.0 ±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).
