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Characiformes (Characins) >
Curimatidae (Toothless characins)
Etymology: Cyphocharax: Greek, kyphos = curved, humpback + Greek, charax = a marine fish without identification (Ref. 45335); sanctigabrielis: The specific name is in reference to the município de São Gabriel da Cachoeira, Amazonas State, within which the new species was discovered.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения
экология
; пресноводный донно-пелагический. Tropical
South America: Upper rio Negro, Amazon basin in Brazil.
Размер / Вес / Возраст
половая зрелость: Lm ?  range ? - ? cm
Max length : 6.7 cm SL самец/пол неопределен; (Ref. 96871)
Краткое описание
определительные ключи | морфология | морфометрия
членистые (мягкие) лучи спинного плавника (общее число) : 12; членистые (мягкие) лучи анального плавника: 9 - 10; позвонки: 30 - 31. Cyphocharax sanctigabrielis is distinguished from all congeners by having on the lateral surface of the caudal peduncle a distinct, longitudinally elongate, posteriorly often vertically expanded, darkly pigmented mark extending anteriorly from the base of the median caudal-fin rays to the vertical through the posterior limit of the base of the adipose fin. This dark pigmentation on the caudal peduncle is not present in C. abramoides, C. aspilos, C. derhami, C. festivus, C. leucostictus, C. magdalenae, C. microcephalus, C. multilineatus, C. nigripinnis, C. notatus, C. pinnilepis, C. plumbeus, C. stilbolepis, and C. vexillapinnus. When present, the dark pigmentation in that region in other congeners can alternatively be rotund (C. gangamon, C. gillii, C. gouldingi, C. helleri, C. mestomyllon, C. oenas, C. punctatus, C. spiluropsis, and C. vanderi), somewhat triangular with its posterior border darker (C. meniscaprorus), a vertically oriented ellipsoid (C. aninha), in the form of an elongate stripe (C. laticlavius, C. modestus, C. nagelii and C. pantostictus) or longitudinally ovoid but terminating anteriorly distinctly posterior to the vertical through the posterior limit of the base of the adipose fin (C. biocellatus, C. gilbert, C. saladensis, C. santacatarinae, C. signatus, C. spilotus, C. spilurus, and C. voga). It differs further from other congeners by the lack of a series of dark stripes or spots running between the scale rows (vs. the presence of such dark pigmentation in C. helleri, C. multilineatus, and C. pantostictus), the absence of two to eight dark spots distributed along the midlateral surface of the body (vs. the presence of such pigmentation in C. biocellatus, C. punctatus, and C. vanderi), the absence of a patch of dark pigmentation on the dorsal or adipose fins (vs. the presence of such pigmentation in C. nigripinnis, C. notatus and C. vexillapinnus) and a non-fleshy upper lip (vs. lip very fleshy in C. mestomyllon). It can be further diagnosed meristically from various other congeners by having 31 pored scales along the lateral line from the supracleithrum to the hypural joint (vs. 4-9 pored scales in C. aninha, C. saladensis and C. signatus, 27 in C. vanderi, 27 or 28 in C. gangamon and in sum 32 to 97 in C. abramoides, C. aspilos, C. gilbert, C. leucostictus, C. magdalenae, C. nagelii, C. nigripinnis, C. pinnilepis, C. platanus, C. santacatarinae, C. stilbolepis, and C. voga), 9 branched dorsal-fin rays (vs. 10 to 12 in C. spilotus), and 30 or 31 vertebrae (vs. 28 or 29 in C. vanderi and 32 to 37 in C. abramoides, C. aspilos, C. gilbert, C. modestus, C. nagelii, C. notatus, C. platanus, C. santacatarinae, C. stilbolepis, and C. voga). It can be further distinguished from various congeners based on morphometric ratios and counts (Ref. 96871).
Body shape (shape guide): fusiform / normal.
The type locality is a shallow (30-50 cm), slow-flowing stream over fine and sand substrate
within a well-preserved forested setting with the stream borders lined with grasses and rushes (Ref. 96871).
Жизненный цикл и брачное поведение
половая зрелость | размножение | нерест | икра | Плодовитость | личинки
Melo, B.F. and R.P. Vari, 2014. New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin. Neotrop. Ichthyol. 12(2):327-332. (Ref. 96871)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-2 (Global))
Угроза для людей
Harmless
Использование человеком
рыболовство: интереса не представляет
дополнительная информация
инструменты
Специальные отчеты
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ресурсы в Интернет
Оценки, основанные на моделях
Индекс филогенетического разнообразия (ссылка 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01413 (0.00618 - 0.03226), b=3.03 (2.86 - 3.20), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
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0 |
устойчивость к внешним воздействиям (ссылка 120179) |
высокий, минимальное время удвоения популяции до 15 месяцев (Preliminary K or Fecundity.). |
Уязвимость рыбной ловли (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |