分类 / Names
俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii 辐鳍鱼纲 (条鳍鱼)
(Catfish) > Loricariidae
(Armored catfishes) > Ancistrinae
Etymology: Baryancistrus: Greek, barys = heavy + Greek, agkistron = hook (Ref. 45335); chrysolomus: Derived from the Greek 'chryso', meaning orange or yellow and 'loma', meaning border, in allusion to the colored band at the border of the dorsal and caudal fins. A noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
; 淡水 居于水底的.
South America: Rio Xingu drainage in Brazil.
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 29.6 cm TL 雄鱼/尚未辨别雌雄; (Ref. 111518); 最大体重: 410.00 g (Ref. 111518)
型态特徵 | 形态测量图
背棘 (总数): 2; 背的软条 (总数): 7; 臀鳍软条: 5. Distinguished from its congeners by having a broad orange to yellow band along the entire distal border of dorsal and caudal fins. Can be diagnosed from other species of Baryancistrus by the combination of the following characters: absence of clear dots on the body; naked abdomen; mandibullary teeth around 70; and dark body with very faint, almost indistinguishable light marks. Both young of Baryancistrus xanthellus and Baryancistrus chrysolomus possess wide light bands on dorsal and caudal fins, but these bands are only retained in adults of Baryancistrus chrysolomus. Both species differ in body coloration, Baryancistrus xanthellus is spotted while Baryancistrus chrysolomus is almost plain (Ref. 87296).
Adults occur under large flat rocks settled directly on the river bottom, in places with considerable amounts of fine sediments. Young individuals inhabit marginal areas of the rapids, near the river banks, usually just one or two individuals. They occupy under rocks in places with slow to moderate flowing waters, usually with sediment accumulation over the rocks and river bottom. Based on two specimens, this species feeds mainly on diatoms and occasionally on invertebrate larvae associated with fine sediments and sand grains (Ref. 87296).
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Rapp Py-Daniel, L., J. Zuanon and R. Ribeiro de Oliveira, 2011. Two new ornamental loricariid catfishes of Baryancistrus from rio Xingu drainage (Siluriformes: Hypostominae). Neotrop. Ichthyol. 9(2):241-252. (Ref. 87296)
CITES (Ref. 115941)
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
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00623 - 0.01760), b=3.12 (2.97 - 3.27), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
脆弱性 (Ref. 59153
): Low vulnerability (16 of 100) .