How much does a peacock mantis shrimp weigh?

A peacock mantis shrimp typically weighs between 0.5 to 1.0 pounds (approximately 0.2 to 0.45 kilograms). Their weight can vary depending on their size and age, as these vibrant marine creatures can grow to about 6 to 12 inches (15 to 30 centimeters) in length.