Question: how big are crucian carp?
Answer: The crucian carp is a medium-sized cyprinid, typically 15 centimetres (5.9 in) in body length, and rarely exceeds in weight over 2 kilograms (4.4 lb), but a maximum total length of 64 centimetres (25 in) has been reported for a male, and the heaviest published weighed 3 kilograms (6.6 lb).