Common name: Large scale loach
Synonyms and Other Names: Paramisgurnus dabryanus Sauvage, 1878; Misgurnus mizolepis Günther, 1888; Misgurnus oligolepos Chen, Shen & Li, 1994.
available through www.itis.gov
Identification: Paramisgurnus dabryanus is distinct from all North American native freshwater fishes. Paramisgurnus dabryanus can be distinguished from Misgurnus anguillicaudatus (another loach popular in the aquarium trade) by the size of the crests on the caudal peduncle (high vs. low in M. anguillicaudatus), shape of the lamina circularis (bony process or scale at the base of the first and second pectoral fin rays), and lack of dark spot at the upper portion of caudal fin base (vs. presence in M. anguillicaudatus; Kottelat and Freyhof, 2002)
Native Range: China (Nichols, 1943; Kottelat, 2012)
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 Paramisgurnus dabryanus are found here.
Table last updated 6/13/2021
† Populations may not be currently present.
Means of Introduction: Probable aquarium release.
References: (click for full references)
Kottelat, M. 2012. Conspectus Cobitidum: an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei). The Raffles Bulletin of Zoology Supplement 26:1-199.
Kottelat, M., and J. Freyhof. 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol, Switzerland.
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.
Revision Date: 5/20/2019
Neilson, M.E., 2021, Paramisgurnus dabryanus Dabry de Thiersant, 1872: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=2934, Revision Date: 5/20/2019, Access Date: 6/15/2021
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.