分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Callichthyidae (Callichthyid armored catfishes)
美鯰科 (Callichthyid armored catfishes) > Corydoradinae
Etymology: hypnos: Name refers to Hypnos (Greek for ‘sleep’), the Greek god or personification of sleep, and the twin brother of Thanatos, the god/personification of death; referring to the fact that even though both C. hypnos and C. thanatos may have some similarities (in color pattern), they are completely different in other aspects (general morphological pattern); noun in apposition.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的.
分布
領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
South America: Brazil.
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 3.2 cm SL 雄魚/尚未辨別雌雄; (Ref. 138443)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
This species is distinguished by the following characters: with posterior margin of pectoral-fin spine with most serrations directed towards the tip of the spine; presence of contact between nuchal plate and posterior process of the parieto-supraoccipital; absence of a large-sized dark blotch on caudal-fin base; with dark brown or black markings at least in dorsal and caudal fins, none for the pectoral and pelvic fins; with moderately- to relatively well-developed and smoothly rounded snout; the ventral surface of trunk only with small-sized, non-coalescent platelets; midline of flank with longitudinal series of dark brown or black blotches, when present, diffuse, and mesethmoid partially exposed; anterior laminar expansion moderately developed, poorly expanded towards the anteroventral portion of snout, leaving most of its lateral surface exposed (Ref. 138443).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Inhabits the main channel of the rio Jamanxim to its small tributary streams; mostly associated with the margins of the river, where juvenile specimens were observed shoaling together with juvenile and adult specimens of C. thanatos in the sandy shores, both species in relatively high abundance. In small streams, adult and juvenile specimens were found shoaling togeth; generally in sites with submerged branches, leaf litter, and sandy and/or fine gravel substrate, with C. thanatos in higher numbers than C. hypnos (Ref. 138443).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Tencatt, L.F.C., W.M. Ohara, L.M. de Sousa and M.R. Britto, 2022. Science and hobby joining forces for the discovery of three new Corydoras (Siluriformes: Callichthyidae) from the rio Tapajós basin, Brazil, with comments on Corydoras sp. CW111. Neotropical Ichthyology v. 20 (no. 3): e220070: 1-40. (Ref. 138443)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01778 (0.00758 - 0.04173), b=3.02 (2.82 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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