[3] This species can reach a length of 25 centimetres (9.8 in) TL and the greatest recorded weight for a specimen is 250 grams (8.8 oz).

[2] The Chinese sleeper is native to the inland waters of north-eastern China, northern North Korea, and the Russian Far East.

[9] This implies that this species cannot be imported, bred, transported, commercialized, or intentionally released into the environment in the whole of the European Union.

[11] In the late summer of 2022, a small community of Chinese sleepers was found in a single pond in southwest Finland, the first record of the species in the country.

However, introduced populations are of concern as they could become detrimental to the local fauna due to their predatory nature and voracious appetite.