Type of packaging and number in each package: 200 threads of leech baby Net weight: 0.001 g (one thousandth of a gram) Larvae leech size: 0.2 to 1 cm Uses: Can be used for leech breeders Storage conditions: In water, suitable temperature 18-20 degrees Expiration date: They will survive for 2 to 3 months if the storage conditions are observed Origin: Herodotus Orientalis and Herodotus Medicinalis