Feature: 1. Transparent Glass: Made of crystal glass, this trap is safe and will not damage the beauty of the shrimp tank with high transparency, acid resistance, and easy to clean properties. 2. Tiny Opening: With openings smaller than 1mm, this trap prevents harm to young shrimp. The design of the bottom capture hole enhances trapping effectiveness by utilizing the activity patterns of flatworms and leeches. 3. Easy to Use: Simply place liver, dead fish, shrimp, meat, or other bait in the water. Fill the trap with water and place it on a perforated . Clean and rinse the trap the next day, then repeat the process. 4. Multiple Holes Design: Includes 2 hole trap, 3 hole trap, and 8 hole trap, which is convenient for catching malarial parasites effectively and reducing their population in shrimp tanks. 5. Wide Application: Suitable for freshwater and saltwater aquariums, shrimp tanks, cherry shrimp, crystal red shrimp, and dwarf shrimp. Remove malarial parasites from the aquarium without harming young shrimp. Specification: Item Type: Planaria Trap Material: Glass, Plastic Color: Transparent Size: 2 Holes + 3 Holes + 8 Holes Package List: 1 x 2 Hole Planaria Trap 1 x 3 Hole Planaria Trap 1 x 8 Hole Planaria Trap