Geophagus heckelii ( Threadfin Acara or Heckelii Threadfin) MEDIUM

The Geophagus surinamensis, also known as the Redstriped Eartheater, is a South American cichlid fish, notable for its ability to sift through substrate for food. It is a larger Geophagus species, reaching up to 12 inches (30 cm) in length, and is characterized by beautiful iridescent blue, green, and red colors, though the red stripes may fade in aquarium environments.

The Green Terror Cichlid (Andinoacara rivulatus) is a vibrant freshwater fish known for its striking green and blue coloration and, as the name suggests, its potential for aggressive behavior. They are a popular choice in the aquarium hobby due to their beauty but require experienced keepers due to their territorial nature.

The Geophagus brasiliensis, commonly known as the Pearl Eartheater or Pearl Cichlid, is a South American cichlid known for its striking blue spotting on a brown or tan base. Males can grow up to 25 cm, while females are generally smaller. They are native to southeastern Brazil and Uruguay but have been introduced to other regions including Australia and the United States. While they are generally peaceful, they can be territorial, especially during breeding.

The Managuensis Cichlid, also known as the Jaguar Cichlid, is a large, aggressive, and territorial freshwater fish native to Central America. It's characterized by a silvery or golden-green body with black spots and blotches, and a dark stripe running from the eye to the gill cover. In aquariums, they can grow up to 12 inches, but in the wild, they can reach lengths of 24 inches or more.