Ctenopharyngodon idella (Valenciennes) Distribution. Tai Ho River (Chan, 2001 as Ctenopharyngodon idellus; AFCD, 2021c); Lok Ma Chau Loop (Ove Arup & Partners Hong Kong Limited, 2013a); Hok Tau Reservoir (AFCD, 2021c; current survey); Ho Chung River (DSD, 2021; current survey); Ng Tung River, Sheung Yue River, Long Valley, Hong Kong Wetland Park (GBIF.org, 2021); Mai Po Nature Reserve (WWF, 2021). Native range. East China and Russia (East Asia). GBIF.org, 2021); Lam Tsuen River, Sheung Yue River, Ng Tung River (GBIF.org, 2021). Native range. South China, East Asia. Remarks. This species may have also been accidentally introduced during fish stocking of reservoirs (Lai, 2011).

Published as part of Chan, Jeffery C. F., Tsang, Alphonse H. F., Yau, Sze-man, Hui, Tommy C. H., Lau, Anthony, Tan, Heok Hui, Low, Bi Wei, Dudgeon, David & Liew, Jia Huan, 2023, The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins, pp. 128-168 in Raffles Bulletin of Zoology 71 on page 137, DOI: 10.26107/RBZ-2023-0012, http://zenodo.org/record/7815765