Lim, K. K. P. & J. T. B. Kwik, 2012. New record of the chinese cyprinid fish Toxobramis houdemeri in Singapore. Nature in Singapore, 5: 271–273.

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Abstract: The Chinese cyprinid fish, Toxobramis houdemeri Pellegrin, is recorded for the first time in Singapore from Yishun Pond where a population seems to be established.

This is a species that apparently hasn't been seen in the aquarium trade, although it supposedly shows up once in a while in bags of feeders.