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Cyanogaster noctivaga Mattox, Britz, Toledo-Piza & Marinho, 2013

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Brazil country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: never/rarely | Ref:
Regulations: no regulations | Ref:
Uses: no uses
Comments: Type locality of Cyanogaster noctivaga, Amazonas: Santa Isabel do Rio Negro: rock plateau beach along Rio Negro, near mouth of Rio Urubaxi, The type locality is near the mouth of Rio Urubaxi, a right bank tributary of Rio Negro, in the vicinity of Santa Isabel do Rio Negro. It was also collected from the surroundings of Barcelos and from the middle Rio Tiquié (Ref. 93233).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/br.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Mattox, G.M.T., R. Britz, M. Toledo-Piza and M.M.F. Marinho, 2013
National Database:

Common names from other countries

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Chacidae (Squarehead or angler catfish) > Stevardiinae
Etymology: Cyanogaster: Cyano, latinized from the Greek word kúanous (κυανος), meaning blue, and gaster, from the Greek gastêr (γαστηρ), meaning stomach, in referring to the conspicuous iridescent blue colour in the abdominal region .;  noctivaga: Name from Latin noun 'nox' for night and the verb 'vagare' meaning to walk about, when combined as 'noctivaga' or the night wanderer, referring to the presumed nocturnal habits of the species, which was collected exclusively at night; an adjective..

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の漂泳性; 深さの範囲 ? - 2 m (Ref. 93233).   Tropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

South America: Brazil and Colombia.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 1.7 cm SL オス/雌雄の選別がない; (Ref. 93233)

簡単な記述 検索表 | 形態学 | 形態計測学

背鰭 (合計) : 8 - 9; 臀鰭: 19 - 22. This species is distinguished by the following characters: D ii + 8; pelvic-fin rays i + 5; teeth in the inner series of the premaxilla 4; differs from all species of the Stevardiinae by having a single conical tooth in the outer premaxillary series (vs. absent); lacks a pheromone pump usually associated with modified scales on the caudal-fin base; eye large; a line of black chromatophores along the bases of anal and caudal fins; body transparent with abdominal region iridescent blue in life (Ref. 93233).

生物学     用語集 (例 epibenthic)

Specimens were caught with a seine pulled at approximately 1.5 m depth. The type locality is a beach on a rocky poorly vegetated plateau, where the water was dark black with slow current. Individuals were collected at night, approximately between 20:00 and 24:00, during the dry season (October). Stomach contents of cleared and stained specimens were mainly remnants of insect larvae (Ref. 93233).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Mattox, G.M.T., R. Britz, M. Toledo-Piza and M.M.F. Marinho, 2013. Cyanogaster noctivaga, a remarkable new genus and species of miniature fish from the Rio Negro, Amazon basin (Ostariophysi: Characidae). Ichthyol. Explor. Freshwat. 23(4):297-318. (Ref. 93233)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 04 March 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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インターネットの情報源

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
栄養段階 (Ref. 69278):  3.0   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).