分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Siluriformes (Catfishes) >
Heptapteridae (Three-barbeled catfishes)
Etymology: Pimelodella: Diminutive latinized of greek, pimele = fat + Greek, odous, odella = little teeth (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 熱帶
South America: Maroni/Marowijne River basin.
南美洲: 法屬圭亞那。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 10.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 101566)
Appears to be smaller than P. cristata. P. geryi and P. cristata share the same biotope. Inhabits the high and middle parts of rivers, in zones with more or less fast flowing water and a rocky substrate (rock clusters consisting of pre-Cambrian pebbles, shales). Lies hidden under rocks, letting its barbel out to auscultate the exterior world. Emits growling sounds regularly (alarm signals?) and goes stalk-hunting frequently scouting around its hiding place. The population is organized in a hierarchical structure based on size, with markedly aggressive behavior. The juveniles are found mostly in seasonal little tributaries. Diet changes according to size: small crustaceans, insect larvae and adult, and fish. This slow-growing species can live for more than 10 years in the wild (Ref. 35381).
似乎比 P. cristata 更小. P. geryi 与 P. cristata 分享相同的生存环境。 栖息于河的高而中央部份, 在有约略快速地的地方流动水与一个岩石的底部.(岩石聚集包含前寒武纪的小圆石，页岩) 躺卧在岩石下面藏,让它的触须向外到听诊外部的世界。 发出经常地怒吠声音 (警报信号?) 而且去悄悄靠近-时常猎食它的藏身处的周围斥候活动。 族群在以大小为依据的阶层结构被组织, 具有显着地侵略性行为。 稚鱼大部份在季节性的小支流中被发现。 食物改变根据大小: 小型甲壳动物，昆虫幼生与成鱼 , 与鱼。 这生长缓慢的种能在荒野中活到超过 10 年。 (参考文献 35381)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Reproductive mode and guild assumed to be the same as congeners (Ref. 56810).南美洲: 法屬圭亞那。
Bockmann, F.A. and G.M. Guazzelli, 2003. Heptapteridae (Heptapterids). p. 406-431. 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. 36914)
人类利用
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年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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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=0.00871 (0.00502 - 0.01510), b=2.97 (2.82 - 3.12), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±0.55 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
