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) >
Heptapteridae (Three-barbeled catfishes)
七鰭鯰科 (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
生態學
; 淡水 居於水底的. 熱帶
South America: Maroni/Marowijne River basin.
南美洲: 法屬圭亞那。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 10.8 cm SL 雄魚/尚未辨別雌雄; (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 與 P. cristata 分享相同的生存環境。 棲息於河的高而中央部份, 在有約略快速地的地方流動水與一個岩石的底部.(岩石聚集包含前寒武紀的小圓石，頁岩) 躺臥在岩石下面藏,讓它的觸鬚向外到聽診外部的世界。 發出經常地怒吠聲音 (警報信號?) 而且去悄悄靠近-時常獵食它的藏身處的周圍斥候活動。 族群在以大小為依據的階層結構被組織, 具有顯著地侵略性行為。 稚魚大部份在季節性的小支流中被發現。 食物改變根據大小: 小型甲殼動物，昆蟲幼生與成魚 , 與魚。 這生長緩慢的種能在荒野中活到超過 10 年。 (參考文獻 35381)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
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)
IUCN 瀕危狀態 (Ref. 130435)
無危 (LC) ; Date assessed: 02 December 2020
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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).
營養階層 (Ref.
69278): 3.6 ±0.55 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
