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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Geophaginae
Etymology: Geophagus: Greek, gea = the earth + Greek, phagein = to eat (Ref. 45335); santosi: Named for Alexandre Clistenes Alcântara Santos, anichthyologist and a friend, who is dedicated to the study of aquatic ecosystems of northeast Brazil.
Eponymy: Dr Alexandre Clistenes Alcântara Santos is a Brazilian ichthyologist who is Professor at the Feira de Santana State University (UEFS) and a master’s and doctoral advisor in the Postgraduate Programs in Zoology at UEFS and in Ecology and [...] (Ref. 128868), visit book page.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения
экология
; пресноводный донно-пелагический. Tropical
South Amercia: Brazil.
Размер / Вес / Возраст
половая зрелость: Lm ?  range ? - ? cm
Max length : 15.3 cm SL самец/пол неопределен; (Ref. 119412)
Краткое описание
определительные ключи | морфология | морфометрия
This species is distinguished from all other species of G. brasiliensis group by having by having dorsal and anal fins with blue stripes parallel to fin rays on their longest portion (vs. transverse blue bands crossing rays or fins with dots) and the basal portion of caudal-fin with short, longitudinal bluish-white lines (vs. dots or bars); further distinguished except for G. rufomarginatus, G. obscurus, by the presence of an oblique iridescent blue zone between the humeral region and the anterior portion of the dorsal-fin base (vs. no iridescent blue zone); differs from G. obscurus by having having an oblique suborbital row of aligned, small iridescent blue marks, not extending to cheek (vs. suborbital iridescent blue marks irregularly arranged extending to the cheek) and with chest profile straight in lateral view (vs. convex); differs from G. rufomarginatus by having dorsal-fin lappets with grey or dark brown edges (vs. red), with denticles on gill-rakers of the first branchial arch (vs. absent); differs from G. itapicuruensis by having D XIV (vs. D XIII) and lateral spot rounded (vs. elliptical); differs from G. diamantinensis by the absence of a dark brown mark on the humeral region (vs. presence), no horizontal dark brown band on the snout (vs. present), and urohyal bone with strong constriction (vs. with gentle anterior constriction); differs from G. brasiliensis by having a terminal mouth (vs. sub-dorsal) (Ref. 119412).
Cross section: compressed.
Жизненный цикл и брачное поведение
половая зрелость | размножение | нерест | икра | Плодовитость | личинки
Mattos, J.L. and W.J.E.M. Costa, 2018. Three new species of the 'Geophagus' brasiliensis species group from the northeast Brazil (Cichlidae, Geophagini). OrinoZoosyst. Evol. 94(2):325-337. (Ref. 119412)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-2 (Global))
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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=0.02344 (0.01123 - 0.04892), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Трофический уровень (ссылка 69278) |
2.3 ±0.1 se; based on size and trophs of closest relatives |
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 (23 of 100). 🛈 |