Lake minnow (Rhynchocypris percnurus) fish species and information / pictures of Lake minnow - Rhynchocypris percnurus

Lake minnow (Rhynchocypris percnurus) fish species information

Scientific Name
Rhynchocypris percnurus

Common Name
Lake minnow

Biology
Inhabits small lakes, shallows or isolated small bays of larger lakes, swamps, artificial ponds, with abundant vegetation, turbid water, with mud or clay bottom. Prefers to live in still water or slow current. Commonly found in shallows among vegetation in schools of 20-89 individuals. Can survive extreme low oxygen concentrations in summer and winter. Hibernates (in northern regions) during winter or remains inactive at temperatures close to 0?C. Feeds on a wide variety of prey, from plankton to benthic animals. Globally not under threat, but some isolated relict populations in Middle Volga and Poland have already been extirpated, are declining or threatened. Several of these populations may possibly represent a distinct species, which, if confirmed, will significantly change the present conservation assessment (Ref. 59043).

Classification

Classified By
Pallas, 1814
Class
Ray-finned fishes (Actinopterygii)
Order
Carps (Cypriniformes)
Family
Minnows or carps (Cyprinidae)

Distribution

Region
Eurasia
Distribution
Eurasia: Widespread but highly disjunct range: lakes in Odra, Vistula, Dniepr, Volga (Oka and Kama systems) drainages, isolated localities in Middle Volga, lakes in Arctic Ocean (from Nothern Dvina to Kolyma drainages) and Pacific basins (from Amur to Korea and Japan).
Range
75°N - 35°N, 35°E - 175°E

Environment

Climate
Subtropical
Water Temperature From
15 °C
Water Temperature To
23 °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
benthopelagic
Environment
Freshwater; benthopelagic; non-migratory
Trophic Level
3.23 s.e. 0.39 Based on food items.
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
18.5 cm
Common Length
9.0 cm
Phylogenetic Diversity Index
PD50 = 0.5156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: commercial
Vulnerability
Moderate vulnerability (36 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.19-0.23; tmax=6)
Threat To Humans
  Harmless
IUCN Red List Status
  Least Concern (LC)