Black Bar Silver Dollar (Myleus schomburgkii) 3"

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 Geophagus heckelii, also known as the Threadfin Acara or Heckelii Threadfin, is a South American cichlid from the northern Amazon Basin according to Aquatics Unlimited. They are characterized by their golden-brown to beige body with darker vertical bars, and unique thread-like extensions on their dorsal and anal fins. They are known for their "eartheater" behavior, sifting through the substrate for food.