分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Scoloplacidae (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
生态学
; 淡水 居于水底的. 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 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 2.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 36693)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 4; 臀鳍软条: 6. Paired bilateral barbels.
成对的左右对称的触须。
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).
一个呼吸空气的鱼类, 居住于清澈的水域溪流底部为砂质或泥质的地方, 向上到 2.5 公尺深水流大于 30 公分/秒在晨昏与夜晚觅食,移动一点点而且主要捕食宝刀鱼仔鱼与极小的蠕虫。 当被惊扰时可能埋藏它本身在砂中, 潜水很快地头部先行而且用身体来制造侧面的运动。 在裸露的根缠结与生长水中水生植物的基部部分当中隐藏在白天期间, 与在植物残枝之中在底部上。 874 的样本采自雨季的末端的个体 (7.7-16.4 mm SL) 包含六个性别双型性雄性 (14.0-14.6 mm SL) 与一些雌性成鱼 (12.8-16.4 mm SL) 在每个卵巢中多达 300个不成熟的卵母细胞可能。 采自随意的 28个成鱼 (11.9-14.1 mm SL) 的性比是对 1.14个雌性的 0.86个雄性。 (参考文献 39865)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
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)
人类利用
渔业: 没有兴趣
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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).
营养阶层 (Ref.
69278): 2.8 ±0.26 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
