Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Fluviphylacidae (American lampeyes)
Etymology: Fluviphylax: Latin, fluvius = river + Greek,phylax, -akos = guardian (Ref. 45335); wallacei: Named for the British naturalist Alfred Russel Wallace (1823-1913).
Eponymy: Alfred Russel Wallace (1823–1913) was an English naturalist, evolutionary scientist, geographer and anthropologist and one of the greatest men of science of his age. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
; Nước ngọt Sống nổi và đáy; Mức độ sâu 0 - 1 m (Ref. 123788). Tropical
South America: Brazil.
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Chín muồi sinh dục: Lm ? range ? - ? cm
Max length : 1.5 cm SL con đực/không giới tính; (Ref. 123788); 1.3 cm SL (female)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Các vây lưng mềm (tổng cộng) : 5 - 7; Tia mềm vây hậu môn: 7 - 9; Động vật có xương sống: 27 - 28. This species is distinguished from its congeners by having a sexual dimorphic pattern on cephalic lateral line system, males have whole opened sensory canals while females have the anterior section of supra-orbital, posterior infra-orbital and preopercular canal dorsal portion closed; males with pointed dorsal fin (vs. rounded). It is similar to F. gouldingi and differs from all other congeners by having a slender retroarticular (vs. deep) and with triangular opercle (vs. scale-like); the head free neuromasts not placed in shallow grooves (vs. in shallow grooves) and with orange colouration on the posterior region of the pectoral fin in males (vs. absent); also it has 2-4 black bars on the anterior portion of the flank in preserved male (vs. absent); males with anal fin elongate and pointed, reaching vertical to dorsal-fin tip (vs. short and rounded); male pelvic-fin reaching base of the fifth anal-fin ray (vs. reaching base of third anal-fin ray); ventral process of posttemporal short (vs. long); mesethmoid rounded; presence of sexual dimorphism in urogenital papillae morphology (vs. absent) (Ref. 123788).
Cross section: compressed.
In the Igarapé Mauaú, this species was collected in a shallow area, about 30-70 cm deep, in a slow flowing high transparency black-water stream, with sandy beaches and leaf litter areas on the bottom near stream margin. It was found forming shoals of about 15-20 individuals that were swimming near the surface. This species was found sympatrically with the Hyporhamphus brederi (Ref. 123788).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Bragança, P.H.N., 2018. Fluviphylax gouldingi and F. wallacei, two new miniature killifishes from the middle and upper Rio Negro drainage, Brazilian Amazon (Teleostei, Cyprinodontiformes, Cyprinodontoidei). Spixiana (München) 41(1):133-146. [German translation appeared in DKG-Journal, 52(1):Feb. 2020:1-18.] (Ref. 123788)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Các nghề cá: không ích lợi (thú vị)
Các công cụ
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Estimates based on models
Phylogenetic diversity index (Tài liệu tham khảo
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00207 - 0.01392), b=3.09 (2.87 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Tài liệu tham khảo
69278): 3.0 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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