shrimp swimming

(journal on it: https://www.fishforums.net/threads/5-gallon-fluval-spec-v.472852/) I have a 5 gallon fish tank with 2 guppies, 2 dwarf rasboras, 1 cardinal that I was misled to buy, 6 cherries, 3 assassin snails, 1 ramshorn and a bunch of baby rams horns that the assassins are killing. I noticed...