Plants can add unique appearance to any tank. They create a healthier environment by facilitating the removal of waste, the oxygenation of the water and providing shelter to the aquariums inhabitants.
Oscar
Oscars (or Astronotus ocellatus) are large, territorial and commonly sold South American Cichlids. They are well loved due to their curious nature and acknowledgement of their owners, recognising the human that feeds them. Due to their popular nature they are often housed and fed incorrectly, have a read of this article if you're thinking of getting yourself an Oscar.