Classificatie / 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)..
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water benthopelagisch; diepte 0 - 1 m (Ref. 123788). Tropical
South America: Brazil.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 1.5 cm SL mannelijk / geslacht onbekend; (Ref. 123788); 1.3 cm SL (female)
Korte beschrijving
Morfologie | Morfometrie
Dorsale zachte stralen (totaal): 5-7; Anale zachte stralen: 7 - 9; Wervels: 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).
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).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Meer informatie
Lokale namenSynoniemenMetabolismePredatorenEcotoxicologieVoortplantingMaturiteitPaaienPaaiaggregatiesFecunditeitEierenOntwikkeling van de eieren
Leeftijd/GrootteGroeiLengte-gewichtLengte-lengteLengtefrequentiesMorfometrieMorfologieLarvenLarvale populatiedynamiekRekruteringAbundantieBRUVS
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaElectrophoresesErfelijkheidZiektesVerwerkingNutrientsMassaconversie
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