Astyanax vermilion

Astyanax vermilion Zanata & Camelier, 2009

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Astyanax vermilion
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> Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mithology (Ref. 45335);  vermilion: From the Latin word 'vermiculus' (small worm which yields a red dye), meaning an orangish red pigment, originally derived from the powdered mineral cinnabar. This is in allusion to the red coloration of posterior body portion of this species when alive.

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

; 新鮮な水 底生の漂泳性.   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: rio Salgado and rio Almada in Brazil.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 4.3 cm SL オス/雌雄の選別がない; (Ref. 81202)

簡単な記述 形態学 | 形態計測学

背鰭 (合計): 10-11; 臀鰭: 23 - 26; 脊つい: 33. Diagnosed from all its congeners from northeastern Brazilian drainages by having distal portion of pelvic fins dark, a combination of sexually dimorphic characters, posteroventral portion of body and fins (except pectoral) reddish in life, and inconspicuous humeral and caudal spots. Can be further distinguished by having the following characters: highest body depth just anterior of dorsal-fin origin, scales on lateral line 32-34; five series of scales between dorsal origin and lateral line; three series of scales between lateral line and pelvic-fin origin; anal fin with 20-23 branched rays; dorsal usually ii,8,i; base of anterior anal-fin rays with 8-12 scales; one or two maxillary teeth; presence of no more than 5 cusps and dentary teeth abruptly decreasing in size posteriorly (Ref. 81202).

生物学     用語集 (例 epibenthic)

Inhabits clear water streams, running over rocky, pebbles and sand bottom at low altitudes ranging from 188 to 258 m, with slow to moderate water current and less than 1 m deep (Ref. 81202). Stomach contents of three specimens include filamentous algae, fragments of vascular plants and seeds, insects and other unidentified arthropods, and organic debris (Ref. 81202).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 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

Zanata, A.M. and P. Camelier, 2009. Astyanax vermilion and Astyanax burgerai: a new characid fishes (Ostariophysi: Characiformes) from Northeastern Bahia, Brazil. Neotrop. Ichthyol. 7(2):175-184. (Ref. 81202)

IUCNのレッドリストの状況は (Ref. 123251)


CITES (Ref. 123416)

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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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00595 - 0.02787), b=3.06 (2.89 - 3.23), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  2.9   ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  高い, 15か月以下の倍増期間の最小個体群 ().
弱み (Ref. 59153):  Low vulnerability (10 of 100) .