Классификация / Names
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Siluriformes (Catfishes) >
Loricariidae (Armored catfishes) > Hypostominae
Etymology: Baryancistrus: Greek, barys = heavy + Greek, agkistron = hook (Ref. 45335); xanthellus: The specific name is from the Greek 'xanthellus', meaning yellow, in reference to the bright color of the species. A noun in apposition..
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный демерсальный. Tropical
South America: Volta Grande do rio Xingu, an area immediately above Belo Monte falls, and rio Iriri, the larger tributary of rio Xingu in Brazil.
Size / Вес / Возраст
Maturity: Lm ?  range ? - ? cm
Max length : 29.7 cm TL самец/пол неопределен; (Ref. 111518); наибольший вес (опубликованные данные): 510.00 g (Ref. 111518)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 2; членистые (мягкие) лучи спинного плавника (общее число) : 7; членистые (мягкие) лучи анального плавника: 5. Distinguished from all its congeners by the presence of broad light band on dorsal and caudal
fin distal borders in juveniles, becoming a small dot on dorsal and caudal-fin tips in adults. In addition, this can be separated from all other congeners by the combination of the following characters: presence of light spots on the whole body; naked abdomen; around 60 mandibullary teeth on both maxillae; and presence of bold yellow markings in young individuals, a reason for its popular name in the aquarium trade 'amarelinho' in Portuguese (meaning little yellow) (Ref. 87296).
Young individuals form groups of several individuals under flat rocks at the bottom of shallow rapid stretches. Adults occur in larger spaces among and under submerged boulders. Based on three specimens, this species feeds mainly on algae and occasionally on bryozoans and chironomid larvae (Ref. 87296).
Life cycle and mating behavior
Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки
Rapp Py-Daniel, L.H., 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)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Harmless
Использование человеком
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инструменты
Специальные отчеты
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00842 - 0.02848), b=3.01 (2.86 - 3.16), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
устойчивость к внешним воздействиям (Ref.
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).