Classification / Names
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Cypriniformes (Carps) >
Xenocyprididae (East Asian minnows)
Etymology: Opsariichthys: Greek, opsarion, -ou = a little portion fish + Greek, ichthys = fish (Ref. 45335); duchuunguyeni: Named for Prof. Nguyen Huu Duc, who has contributed to Vietnamese freshwater fishes research..
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό. Tropical
Asia: Bang Giang river and Ky Cung river of the Pearl river in Viet Nam.
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 7.3 cm SL αρσενικό/απροσδιόριστο; (Ref. 95038); 6.1 cm SL (female)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Μαλακές ραχιαίες ακτίνες (συνολικά) : 10; Μαλακές εδρικές ακτίνες: 12; Σπόνδυλοι: 40 - 41. Distinguished from other species of Opsariichthys by the following combination of characters: maxillary barbels absent; anterior notch on tip of upper lip absent; 41 scales on lateral line; 13-14 pre-dorsal scales; body width narrow; maxillary extending to or slightly beyond vertical of anterior margin of orbit; a series of two rows with 12-15 rounded tubercles on lower jaw; pectoral fin extending to origin of ventral fin in adult male; and snout and ventral side of head orange red in adult male in life (Ref. 95038).
Inhabits the upper reach of stream with moderate velocity of clear water and substrate of small and medium pebbles and boulders (Ref. 95038).
Life cycle and mating behavior
Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
Huynh, T.Q. and I.-S. Chen, 2013. A new species of cyprinid fish of genus Opsariichthys from Ky Cung-Bang Giang River basin, Northern Vietnam with notes of the taxonomic status of the genus from Northern Vietnam and Southern China. J. Mar. Sci. Tech. 21(Suppl:)135-145. (Ref. 95038)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00415 - 0.01826), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
