package included 2 pcs glass planaria catcher , glass bristle worm trap measure about 4.33"L x 0.78"D
Leech trap for aquarium comes with 3 holes design whitch Make it easy for crayfish to get in and hard to get out
EASY TO USE: Placing the bait in the top bulb section with the entrance hole facing the substrate and changing the bait (e.g., raw pork liver, dead fish, shrimp, meat, etc.) will also help keep them interested!
it's great for catch planaria, flat worms and leeches, useful tool to keep your aquarium clean
use it make you aquarium no planaria for shrimp tank