Amano shrimps are the most common shrimps in aquariums with plants. They are a great remedy for algae in the aquarium. According to the portal ( aquarium natural) link: t ... / artykuly / na-alga- w-akwar ium / It is assumed that one shrimp falls on 4-6 liters. In our tests, 50 amano shrimps in a 100-liter aquarium in 24 hours cleansed all kinds of green algae plants and decorations that we provided to see how they cope.This according to the portal (and in my opinion 20 shrimp per 200 liters is just right) they are open to you.) Additional information 0831456284