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💧 Freshwater 🌡️ Subtropical

Onychostoma Virgulatum

Onychostoma virgulatum Xin, Zhang & Cao, 2009
Max Length
14.6 cm
Max Weight
-
Lifespan
-
Trophic Level
2.8
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
26.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Onychostoma Virgulatum (Onychostoma virgulatum), first described by Xin, Zhang & Cao, 2009 is a small fish in the family Cyprinidae (order Cypriniformes). Adults typically reach 14.60 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.

Scientific Name
Onychostoma virgulatum
Authority
Xin, Zhang & Cao, 2009
Habitat
Freshwater
Climate
Subtropical
Max Length
14.6 cm
Trophic Level
2.8
Resilience
High
Vulnerability
26.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 13; Anal soft rays: 9; Vertebrae: 40 - 41. Moderate mouth with a nearly transverse or slightly arched opening with the extremities slightly curved posteriorly and its width equal to or slightly less than the corresponding head width and a short post-labial groove extending along half of the length of the lower jaw lateral margin. Differs from all other species of Onychostoma, except Onychostoma meridionale and Onychostoma fusiforme, with a moderate mouth by the possession of a longitudinal dark brown stripe extending along the lateral line. Can be diagnosed from these two species in having two pairs of barbels in adults (vs. present in juveniles, but absent in adults in Onychostoma fusiforme, or absent in adults and juveniles in Onychostoma meridionale. Differs further from Onychostoma fusiforme by having the following characters: deeper body depth 26.3-27.7% SL (vs. 20.4-23.8), stouter caudal peduncle (length 18.5-21.0% SL, vs. 20.5-23.7 and depth 7.6-9.1% SL vs. 6.7-8.0 or depth 36.1-48.8% of its length vs. 29.7-37.5); prepelvic length 49.8-51.3% SL (vs. 46.2-48.7); preanal length 72.6-74.8% SL (vs. 68.3-71.5). Also distinguished from Onychostoma meridionale in having a stout, serrated last simple dorsal-fin ray (vs. slender, smooth) .

🌀 Behaviour

Behavioural data for Onychostoma Virgulatum is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Subtropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.8±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00676 × L3.11 (TL)
Max TL
14.6cm
Dorsal Rays
13
Anal Rays
9
Vertebrae
41

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
26.00/100
Low vulnerability
Trophic Level
2.8
Omnivore / Planktivore
Climate Zone
Subtropical
Described By
Xin, Zhang & Cao, 2009

🦠 Common Diseases

The following diseases are known to affect Onychostoma Virgulatum.

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