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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Etymology: Austrolebias: Composed from Austro = the south + see under Lebias; ephemerus: Name from Greek 'ephemeros', i.e., ephemeral, short-lived, referring to its short life cycle and the highly seasonal environment in which it lives (Ref. 119764).
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
; air tawar pelagis, permukaan. Tropical
South America: Brazil.
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 3.2 cm SL jantan/; (Ref. 119764); 2.8 cm SL (female)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
This species can be distinguished from other congeners by the following combination of characters: posterior margins of pectoral fins vertical between bases of 5th and 7th anal fin rays in females, greater number of gill rakers on 1st branchial arch, a lower head width in both sexes, a small number of neuromasts in the preopercular series, urogenital papilla attached 60-100% of its length to anal fin males, more rows of scales in transversal series, location of dorsal fin origin relative to the neural spines in both sexes, and reduction in number of dorsal and anal fin rays in both sexes.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Inhabits highly seasonal environment, in small temporary pools, with muddy bottom and slightly turbid water. Maximum length based on type specimen, to be replaced with a better reference (Ref. 119764).
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
Volcan, M.V. and F. Severo-Neto, 2019. Austrolebias ephemerus (Cyprinodontiformes: Rivulidae), a new annual fish from the upper Rio Paraguai basin, Brazilian Chaco. Zootaxa 4560(3):541-553. (Ref. 119764)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: tidak ada kepentingan
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 0.5039 [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) |
3.1 ±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). 🛈 |