Ten grams. Crucian carp splash is a kind of crucian carp, which is common in Europe and Asia. It belongs to Carassius, a subfamily of Cypriniformes. Crucian carp is an omnivorous fish, which mainly feeds on plants. It likes to live in groups and choose food. It can grow to 10 g in three months, and the growth rate of different varieties of crucian carp seedlings is different.