Genchem No Planaria Shrimp Safe Planaria Hydra Killer Shrimp Fish Planted Tank

Hey OP! A closer photo might help, but yes i think those are planaria! If they are, you can deal with them by using this https://a.co/d/01ZQEhw6 . Take note that these will likely kill the snails in your tank too in addition to the planaria, so make sure you monitor ammonia levels. These shouldn't kill shrimps unless you don't follow the dosage levels. Next time, when you buy plants, use a 10% bleach solution to clean them