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Nematolebias whitei, Rio pearlfish : fisheries, aquarium
分類 / 名稱 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) > Rivulidae (Rivulines) 溪鱂科 (Rivulines) > Cynolebiinae
Etymology: Nematolebias:Greek, nema, -atos = filament + Greek, lebias, ou = a kind of small fish (Ref. 45335). Eponymy: General Thomas Dresser White (1901–1965) was the Chief of Staff, United States Air Force, in which he served (1924–1961), having initially been an infantry officer (1920–1924). [...] (Ref. 128868), visit book page. More on author: Myers.
背棘 (總數) : 0; 背的軟條 (總數) : 13 - 19; 臀棘: 0; 臀鰭軟條: 18 - 24; 脊椎骨: 29 - 31. Having series of small bluish white spots, often coalesced to form continuous or fragmented line, on subdistal area of caudal fin and dark brown to black stripe on border of anal fin, adjacent and parallel to perpendicular extensions of subdistal golden transverse lines. Dorsal head profile slightly convex to nearly straight in male, gently concave to approximately straight in female (Ref. 42934). Body shape (shape guide): fusiform / normal. 有成列的小藍白色的斑點, 時常合併形成連續或者碎片了線, 在臀鰭的邊緣上的尾鰭與深褐色的到黑色的斑紋子末梢部區域上, 毗連的而且平行於子末梢部金的橫切線的垂直延長。 頭部背面輪廓些微中凸到幾乎是直的在雄魚中, 逐漸地凹曲到大約筆直地母魚.(參考文獻 42934)
Adults occur in small freshwater temporary pools in floodplains of streams and lagoons. These pools are shallow with compact, soft reddish brown muddy bottom and dry twice a year, during winter, usually from July to August, and during summer, usually from February to March. During dry season, all fish die and eggs undergo in diapause within the substrate. Eclosion happens at the onset of wet season, usually March-April and September-October (Ref. 42934). This species was introduced in California (Ref. 4357). Bottom spawner, 4 months incubation. Is easy to maintain in the aquarium (Ref. 27139).
Males are territorial and very aggressive. Males display an elaborate courtship behavior beginning with waving lateral movement in front of female, with the unpaired fins completely opened. In an oblique position, the male touches the bottom surface with the anterior portion of its head, with vibrating body. The female placed her body side to side with the male. Then both couple dives into the substrates where spawning takes place (Ref. 42934).南美洲: 巴西。
Costa, W.J.E.M., 2002. The neotropical seasonal fish genus Nematolebias (Cyprinodontiformes: Rivulidae: Cynolebiatinae): taxonomic revision with description of a new species. Ichthyol. Explor. Freshwat. 13(1):41-52. (Ref. 42934)
系統發育多樣性指數 (參考文獻 82804): PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), 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 ±0.4 se; based on size and trophs of closest relatives
