分类 / Names
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Teleostei >
Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Delturinae
Etymology: Hemipsilichthys: Greek, hemi = half + Greek, psilos = hairless + Greek, ichtys = fish (Ref. 45335); nimius: From the Latin nimius meaning nimiety, in allusion to the supernumerary rays of the dorsal fin, which has nine branched rays (Ref. 50588).
More on authors: Pereira, Reis, Souza & Lazzarotto.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的. 高海拔
South America: Perequê-Açu and Taquari river basins, southeastern Brazil. Collected in localities between 100 and 370 m above sea level.
南美洲: Pereque-Acu 與 Taquari 河流域，巴西東南方。 在 100 與 370 公尺上方海平面之間的地點中收集了。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 10.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 50588)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 0; 背的软条 (总数) : 7 - 9; 臀棘: 0; 臀鳍软条: 6. Eight (rarely 7 or 9) branched rays in the dorsal fin; dorsal-fin membrane expanded posteriorly, connecting proximal half of the last dorsal-fin ray to the dorsum; teeth cusps equal in size (Ref. 50588).
在背鳍中的八 (很少地 7 或 9)个分支条; 背鳍薄膜在后部地扩大,连接近端一半的最后背鳍鳍条到背面; 齿尖大小相等。 (参考文献 50588)
Type specimens were collected in small coastal streams flowing through well-preserved Atlantic forest; in localities between 100 and 370 m a.s.l., always in rocky substrate with fast flowing, clear water, under direct sunlight, and depths between 10 and 50 cm. Underwater observations indicate that this species is most active during the night, grazing on the bottom (Ref. 57859).
以快速的流动在岩石的底部上收集了, 清澈的水域在深度介于 10 与 50 公分之间.(参考文献 50588)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: Pereque-Acu 與 Taquari 河流域，巴西東南方。 在 100 與 370 公尺上方海平面之間的地點中收集了。
Pereira, E.H.L., R.E. Reis, P.F.M. Souza and H. Lazzarotto, 2003. A new species of the loricariid catfish genus Hemipsilichthys from southern Rio de Janeiro coastal rivers, southeastern Brazil. Zootaxa 285:1-10. (Ref. 50588)
世界自然保护联盟红皮书 (Ref. 130435)
临近濒危 (NT) (B2b(iii)); Date assessed: 07 November 2018
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00206 - 0.01463), b=3.12 (2.89 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
