Common name: Chinese fine-scaled loach
available through www.itis.gov
Identification: A few distinguishing characteristics were given by Nichols (1943). The genus Misgurnus is in need of systematic review. Many, possibly all, of the subspecies of M. mizolepis recognized by Nichols should be considered suspect. Kottelat (2012) has assigned this species to Paramisgurnus dabryanus. Illustrations or photographs appeared in Nichols (1943) and Axelrod et al. (1985).
Size: 21 cm.
Native Range: Eastern Asia: China, Korea, Taiwan (Nichols 1943).
Hydrologic Unit Codes (HUCs) Explained
Puerto Rico &
Interactive maps: Point Distribution Maps
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Misgurnus mizolepis are found here.
Table last updated 5/9/2021
† Populations may not be currently present.
Means of Introduction: Probable aquarium release (Logan et al. 1996).
Status: Failed in Oregon. Subsequent sampling in the Powder River drainage has yielded no more specimens (D. Logan, personal communication).
Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.
References: (click for full references)
Axelrod, H. R., W. E. Burgess, N. Pronek, and J. G. Walls. 1985. Dr. Axelrod's atlas of freshwater aquarium fishes. Tropical Fish Hobbyist Publications, Inc., Neptune City, NJ.
Logan, D. - Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR.
Logan, D.J., E.L. Bibles, and D.F. Markle. 1996. Recent collections of continental exotic aquarium fishes in Oregon and thermal tolerance of Oriental weatherfish and pirapatinga. California Fish and Game 82(2):66-80.
Nichols, J. T. 1943. The freshwater fishes of China. Natural history of Central Asia volume IX. The American Museum of Natural History, New York, NY.
Nico, L.G., Fuller, P., and Neilson, M.E.
Revision Date: 8/15/2017
Peer Review Date: 4/6/2015
Nico, L.G., Fuller, P., and Neilson, M.E., 2021, Misgurnus mizolepis Günther, 1888: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=499, Revision Date: 8/15/2017, Peer Review Date: 4/6/2015, Access Date: 5/9/2021
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.