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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Spectrolebias: Latin, spectrum = imagen of a thing, apparition + Greek, lebias, ou = a kind of small fish (Ref. 45335); brousseaui: Named for Roger D. Brousseau, the person who discovered the species.
Eponymy: Dr Roger D Brousseau is a Californian aquarist and killifish hobbyist. [...] (Ref. 128868), visit book page.
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; 深さの範囲 0 - 1 m (Ref. 93219). Tropical
South America: Bolivia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 3.2 cm SL オス/雌雄の選別がない; (Ref. 93219); 3.5 cm SL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
This species differs from its congeners by having a unique color pattern of males: anterior third of body light brown, posterior two-thirds of body dark blue, almost black dorsal region, with rows of bright blue spots, relatively large size, with about half the diameter of the pupil. It differs from all its congeners, except S. filamentosus, by having pelvic-fin bases separated by an interspaced (vs. pelvic-fin bases in contact), tip of dorsal and anal fins in males with long filamentous rays (vs. absence of filaments, or presents only on dorsal fin in S. semiocellatus and S. inaequipinnatus, or presents only on anal fin in S. chacoensis), and presence (vs. absence) of contact organs on scales of flank in males (Ref. 93219).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
The locality where the species occurs lies at the plateau area (316 m.a.s.l.), just southwest of Llanos de Mojos, which occupy much of the río Mamoré basin. Water temperature at the surface of the pool was 31ºC, at 1 meter depth was 22ºC, and at the marginal area of the pool, at 15 cm depth, was 35ºC. Only small specimens of Trigonectes sp. were collected syntopically in marginal areas, while specimens of Simpsonichthys brousseaui were collected in the deepest areas, at about 1 m deep. The pool has dark water, pH 6.8 and water hardness 80 ppm (Ref. 93219).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Nielsen, D.T.B., 2013. Spectrolebias brousseaui (Cyprinodontiformes: Rivulidae: Cynolebiatinae), a new annual fish from the upper río Mamoré basin, Bolivia. Neotrop. Ichthyol. 11(1):81-84. (Ref. 93219)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: 興味がない
用具
特記事項
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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): PD
50 = 0.5020 [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).
栄養段階 (参照
69278): 3.1 ±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 (10 of 100).
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