Egeria Densa is also known as Brazilian waterweed or Anacharis, easy growing aquarium plant that originates in South America. This is a great beginner plant that makes a good home for livebearers such as guppies, platys, and mollies. Anacharis can actively absorb organic nutrients which is why it grows so quickly. The smooth leaves and stalky growth also makes it an ideal plant for livebearers such as mollies, platys, and guppies.