分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes)
鯰形目 (Catfishes) >
Scoloplacidae (Spiny dwarf catfishes)
尖嘴鯰科 (Spiny dwarf catfishes)
Etymology: Scoloplax: Greek, skoloplax = a thorned plate (Ref. 45335).
More on authors: Schaefer, Weitzman & Britski.
Issue
Natural history observations in Sazima et al. (2000).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶
South America: Amazon and Paraguay/Paraná River basins.
南美洲: 亞馬遜河與巴拉圭/巴拉納河流域。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 2.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 36693)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背的軟條 (總數) : 4; 臀鰭軟條: 6. Paired bilateral barbels.
成對的左右對稱的觸鬚。
Facultative air-breathing in the genus (Ref. 126274); An air-breather, inhabiting clear water streams with sandy to muddy bottom, up to 2.5 m deep with water flow up to 30 cm/sec. Forages at twilight and night, moving little and preying mostly on chironomid larvae and tiny oligochaetes. When disturbed may bury itself in the sand, diving quickly headfirst and making lateral movements with body. Hides during the day amidst the exposed root tangle and basal portions of submersed aquatic vegetation, and among plant debris on the bottom. A sample of 874 individuals (7.7-16.4 mm SL) taken at the end of the rainy season contains six sexually dimorphic males (14.0-14.6 mm SL) and several presumably adult females (12.8-16.4 mm SL) with up to 300 immature oocytes in each ovary. Sexual ratio of 28 adults (11.9-14.1 mm SL) taken at random is 0.86 males to 1.14 females (Ref. 39865).
一個呼吸空氣的魚類, 居住於清澈的水域溪流底部為砂質或泥質的地方, 向上到 2.5 公尺深水流大於 30 公分/秒在晨昏與夜晚覓食,移動一點點而且主要捕食寶刀魚仔魚與極小的蠕蟲。 當被驚擾時可能埋藏它本身在砂中, 潛水很快地頭部先行而且用身體來製造側面的運動。 在裸露的根纏結與生長水中水生植物的基部部分當中隱藏在白天期間, 與在植物殘枝之中在底部上。 874 的樣本採自雨季的末端的個體 (7.7-16.4 mm SL) 包含六個性別雙型性雄性 (14.0-14.6 mm SL) 與一些雌性成魚 (12.8-16.4 mm SL) 在每個卵巢中多達 300個不成熟的卵母細胞可能。 採自隨意的 28個成魚 (11.9-14.1 mm SL) 的性比是對 1.14個雌性的 0.86個雄性。 (參考文獻 39865)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
南美洲: 亞馬遜河與巴拉圭/巴拉納河流域。
Schaefer, S.A., 2003. Scoloplacidae (Spiny dwarf catfishes). p. 310-311. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36693)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-2)
無危 (LC) ; Date assessed: 09 November 2020
人類使用
漁業: 沒有興趣
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (Ref.
69278): 2.8 ±0.26 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
