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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: nigromarginatus: From the Latin nigromarginatus (black margin), in reference to the presence of a black margin on the anal in males.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
; air tawar bentopelagis. Tropical
South America: CorrenteRiver drainage, upper Paraná River Basin in Brazil.
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 3.6 cm SL jantan/; (Ref. 116860); 3.1 cm SL (female)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 10 - 11; Sirip dubur lunak: 13 - 15; vertebrata, bertulang belakang: 30 - 32. Melanorivulus nigromarginatus is similar to M. egens and M. linearis, and differs from all other members of the M. pictus group by having a black distal marginal stripe on the anal fin in males (vs. absence). It can be diagnosed from M. egens and M. linearis by having the following characters: melanophores strongly concentrated on the post-orbital and humeral regions, forming a stripe (vs. weakly concentrated, not forming distinct marks); red dots on the anteroventral portion of flank present (vs. absent); red bars on most portion of caudal fin present in males (vs. bars absent in M. egens and bars restricted to the dorsal portion of the caudal fin in M. linearis); and red chevron-shaped marks irregularly distributed on the flank (vs. regularly). In addition, but not diagnostic to differentiate all speci¬mens, M. nigromarginatus usually possesses 31-33 scales in the longitudinal series (vs. 29-31 in M. egens and M. linearis) (Ref. 116860).
Body shape (shape guide): fusiform / normal.
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
Costa, W.J.E.M., 2018. Three new species of the killifish genus Melanorivulus from the Rio Paraná, central Brazilian Cerrado (Cyprinodontiformes: Aplocheilidae). Zoosyst. Evol. 94(1):17-27. (Ref. 116860)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 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=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
Daya lenting (Acuan 120179) |
Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |