Fish and crustaceans are the main ways removing carbon from freshwater ecosystems. In 2009, the total fishery and aquaculture production in China was 3.45 million tonnes for silver carp Hypophthalmichthys molitrix, 2.43 million tonnes for bighead carp Aristichthys nobilis, 4.08 million tonnes for grass carp Ctenopharyngodon idella, 2.06 million tonnes for crucian carp Carassius auratus and 2.46 million tonnes for common carp Cyprinus carpio. Silver and bighead carp are filtering fish and live on natural food. Mandarin fish Siniperca chuatsi is piscivorous fish and lives on natural fishes that feed on natural food. Assuming that 20% of the total production of grass carp, crucian carp, common carp and blunthead bream Megalobrama amblycephala from aquaculture feeding on the natural food, the carbon removal by freshwater aquaculture is around 1.55 million tonnes and about 1.86 million tonnes of carbon is deposited in feces(the carbon input was not calculated). There are also 0.278 million tonnes of carbon removed from natural capture fisheries as the production is around 2.14 million tonnes. Different lakes are varied in ecosystem characteristics and show different ability of carbon removal. The Poyang Lake is a large shallow lake. The carbon removal from Poyang Lake by fisheries was 11.8~27.6 kg/hm2•yr and its total removal was 3 890~9 061 t/yr, and its total carbon sequestration was 8 558~19 935t/yr during 1950s to 1990s.The Liangzi Lake is a medium shallow lake. Carbon removal by fisheries from Liangzi Lake is around 24~38 t/hm2•yr and total removal is 700~1 100 t/yr. The Donghu Lake is a eutrophic lake and its fisheries carbon removal is 78 kg/hm2•yr and total carbon removal is 260t/yr. The total lake area in the middle and lower reaches of Yangzi River is 16 700 km2 in 1971 and 13 000 km2 in 2000, of which average carbon removal by fisheries is 10~30 kg/hm2•yr and the total carbon removal by fisheries from all these lakes is 16 700~13 000 t/yr and 50 100~39 000 t/yr. Freshwater fisheries and aquaculture could remove carbon from freshwater, but also provide food for the human beings.There are still some differences in carbon removal via different calculations.