Классификация / Names
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Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Acrossocheilinae
Etymology: Onychostoma: Greek, onyx, -ychos = nail + Greek, stoma = mouth (Ref. 45335); dongnaiense: Named in reference to its type locality, middle Dong Nai drainage..
Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный донно-пелагический; pH range: 7.0 - 7.6. Tropical; 26°C - 28°C (Ref. 102622)
Asia: Middle Dong Nai drainage in Vietnam.
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 2.0 cm SL самец/пол неопределен; (Ref. 102622)
Краткое описание
определительные ключи | морфология | морфометрия
членистые (мягкие) лучи спинного плавника (общее число) : 12; членистые (мягкие) лучи анального плавника: 8. Onychostoma dongnaiensis can be diagnosed from other species of Onychostoma by a combination of the following characters: mouth wide (width 1.4?1.6 times in HW); 14-15 predorsal scales; body depth high (3.1?3.4 times in SL); eye diameter small (4.2?4.9 times in HL), barbels absent in adults and juveniles; dorsal fin with a strong serrated last simple ray; and dorsal-fin length high (3.8?4.5 times in SL) (Ref. 102622).
Inhabits clear water but also lives in silty water. Occurs in swift currents over bedrock, large boulders and cobble substrates covered with periphyton. Feeds on algae and animals living in the algae. Shares habitat with Mystacoleucus obtusirostris, Osteochilus vittatus, Poropuntius deauratus, Channa gachua, Yasuhikotakia morleti, and Acantopsis dialuzona. The following water conditions were recorded: Dissolved oxygen 82.7−91.4%; conductivity 12−25 μS.cm-1 ; and flow velocity 0.12−0.77 m/s (Ref. 102622).
Life cycle and mating behavior
Maturities | размножение | Spawnings | Egg(s) | Fecundities | личинки
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)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Harmless
Использование человеком
дополнительная информация
инструменты
Специальные отчеты
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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 (0.00435 - 0.02094), b=3.08 (2.88 - 3.28), 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
устойчивость к внешним воздействиям (Ref.
120179): высокий, минимальное время удвоения популяции до 15 месяцев (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
