Basic biological information of fish in this study^a.

Scientific name	English name	n	Feeding habits	Foraging habitats	The total length (cm)	Body weights (kg)
Hypomesus olidus	Pond smelt	1	Omnivory	Pelagic fishes	10.20	0.0085
Esox reicherti	Amur pike	6	Sarcophagy	Pelagic fishes	50.60 ± 2.40 (47.00–55.00)	0.64 ± 0.14 (0.52–0.91)
Leuciscus waleckii	Amur ide	3	Omnivory	Pelagic fishes	23.90 ± 3.60 (19.00–29.00)	0.14 ± 0.093 (0.035–0.28)
Ctenopharyngodon idellus	Grass carp	19	Herbivority	Middle-lower layers fishes	53.00 ± 11.20 (38.00–72.00)	1.93 ± 1.14 (0.71–4.23)
Hemibarbus labeo	Barbell steed	2	Omnivory	Bottom fishes	26.00 ± 4.90 (22.50–29.50)	0.16 ± 0.09 (0.095–0.23)
Hemibarbus maculatus	Spotted steed	1	Omnivory	Middle-lower layers fishes	28.00	0.22
Saurogobio dabryi	Chinese lizard gudgeon	1	Omnivory	Middle-lower layers fishes	13.70	0.031
Erythroculter ilishaeformis	Topmouth culter	7	Sarcophagy	Pelagic fishes	54.90 ± 8.50 (42.00–69.00)	1.23 ± 0.46 (0.71–2.06)
Erythroculter mongolicus	Mongolian redfin	1	Sarcophagy	Pelagic fishes	24.50	0.22
Cyprinus carpio	Common carp	39	Omnivory	Bottom fishes	42.80 ± 7.40 (29.00–61.00)	1.29 ± 0.87 (0.32–4.40)
Carassius auratus	Crucian carp	36	Omnivory	Bottom fishes	21.80 ± 5.50 (8.80–29.00)	0.22 ± 0.14 (0.019–0.47)
Hypophthalmichthys molitrix	Silver carp	11	Filter feeder (zooplankton, phytoplankton)	Pelagic fishes	47.30 ± 11.90 (26.00–61.00)	1.22 ± 0.86 (0.15–3.65)
Aristichthys nobilis	Bighead carp	12	Filter feeder (zooplankton, phytoplankton)	Pelagic fishes	51.20 ± 9.40 (33.00–64.00)	2.16 ± 1.13 (0.45–4.19)
Pseudobagrus fulvidraco	Yellow catfish	2	Omnivory	Bottom fishes	15.10 ± 3.40 (12.70–17.50)	32.0 ± 2.83 (30.0–34.0)
Parasilurus asotus	Sheatfish	13	Sarcophagy	Bottom fishes	37.00 ± 9.40 (25.00–50.00)	0.41 ± 0.36 (0.10–1.38)
Protosalanx hyalocranius	Clearhead icefish	1	Sarcophagy	Pelagic fishes	14.50	0.025

^a n means the number of samples.