Crucian Carp
Carassius carassius
water fleas, organic detritus, algae, zooplankton, aquatic weeds, small crustaceans, insects, larvae, fish eggs, small fish and small animals living in the lake, pond or river mud
genetic invasion by Prussian carp and goldfish
English carp, golden carp, gibele and Prussian carp
lakes, ponds, slow-moving rivers
Crucian carp
Up to 10 years
6in to 2.1ft (64cm)
Bass, European catfish, European smelt, blue tilapia, snakes, northern pike, Little egret