分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Parodontidae (Scrapetooths)
下口半脂鯉科 (Scrapetooths)
Etymology: Apareiodon: Greek, a = without + Greek, pareia, -as = cheek + Greek, odous = teeth (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
South America: Upper Paraná and upper São Francisco River basins.
南美洲: Parana 上游與 Sao 弗朗西斯科河流域上游。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 11.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 27925)
Inhabits rivers and streams with rocky and sandy bottom, with water flow up to 40 cm/sec. Forages during the day, grazing on algae and preying on bottom-dwelling invertebrates. Uses its well developed pectoral fins to grip the substrate while grazing. Engages in a succession of lunges at the algal growth on rocky bottom, the mobile pedicellate upper teeth likely favoring this grazing mode. Particles thus caught are sorted out in the mouth and then either ingested or spat out. Food is often visually located and picked up. At night, fish congregates in the shallows and in fast-flowing water packs closely among the rocks. Juveniles bear a plain silvery color pattern, gradually replaced by the barred pattern of the adults (Ref. 40391).
棲息於河川與溪流有岩石的，而且沙質底部, 水流大於 40 公分/秒覓食在白天期間, 啃食吃藻類而且捕食底棲無脊椎動物。 使用它的發展良好的胸鰭抓緊底部然而啃食。 在岩石的底部上的海藻成長從事刺的連續,移動的 pedicellate 上顎齒可能有利於這一個啃食模態。 如此捕捉的粒子在嘴巴中的被分類然後或攝取了或者輕打出。 食物時常視覺上位於了而且逐漸恢復。 在晚上，魚在岩石之中在淺灘與快速流動的水包裹中聚集接近地。 稚魚有一個單色的銀色彩色斑紋, 逐漸地被成魚的條紋花紋取代。 (參考文獻 40391)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: Parana 上游與 Sao 弗朗西斯科河流域上游。
Oyakawa, O.T., 1998. Catalogo dos tipos de peixes recentes do Museu de Zoologia da USP. I. Characiformes (Teleostei: Ostariophysi). Pap. Avuls. Zool. 39(23):443-507. (Ref. 27925)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 07 November 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00424 - 0.01487), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 2.3 ±0.14 se; based on food items.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
