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Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Acrossocheilinae
Etymology: Onychostoma: Greek, onyx, -ychos = nail + Greek, stoma = mouth (Ref. 45335); krongnoense: Named in reference to its type locality, upper Krong No drainage.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; air tawar bentopelagis; pH range: 6.5 - 7.2. Tropical; 17°C - 26°C
Asia: Ea Krong No drainage basin in Vietnam.
Size / Weight / umur
Maturity: Lm ? range ? - ? cm
Max length : 2.4 cm SL jantan/; (Ref. 102622)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
duri punggung lunak (Keseluruhan (total)) : 12; Sirip dubur lunak: 8. Onychostoma krongnoensis can be diagnosed from its congeners by a combination of the following characters: mouth wide (width 1.4?1.6 times in HW); 14-17 predorsal scales; caudal peduncle slender and long (2.5?3.3 times longer than deep); barbels absent in adults and juveniles; dorsal fin with a strong serrated last simple ray; eye diameter small (4.6?5.6 times in HL); and tip of snout with 2?3 irregular transverse rows of 13?46 small and large tubercles (Ref. 102622).
Occurs in lotic habitats of main streams with clear water. Prefers erosional zones such as runs and riffles with swift currents over periphyton covering bedrock, large boulders and cobble substrates when foraging. Shoals preferably the depositional zones such as fast flowing pools with detritus and fallen leaves (habitats alternate in rapid succession). Found syntopic with Poropuntius sp., Neolissochilus stracheyi, Annamia normani, Schistura spp., Glyptothorax sp. and Channa gachua. Also shares habitat in the lower reaches of Ea Krong No with Poropuntius sp., Tor spp., Lobocheilus delacouri, Crossocheilus reticulatus, Garra fuliginosa, Garra cambodgiensis, Gyrinocheilus aymonieri, Annamia normani, Schistura spp., and Channa gachua. Feeds on pinnate diatoms (Order Bacillariales) and filamentous algae such Spirogyra sp., Mougeotia sp., and Oedogonium sp. (Ref. 102622).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Hoang, H.D., H.M. Pham and N.T. Tran, 2015. Two new species of shovel-jaw carp Onychostoma (Teleostei: Cyprinidae) from southern Vietnam. Zootaxa 3962(1):123-138. (Ref. 102622)
Status IUCN Red List (Ref. 130435: Version 2024-1)
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: komersial
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00424 - 0.02152), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Daya lenting (Ref.
120179): Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
