The Oscar fish is a popular freshwater aquarium fish known for its vibrant colors and unique personality. Native to the rivers of South America, particularly the Amazon River, these fish can grow up to 12 inches long and are recognized for their intelligence and social behavior. They often interact with their owners and can even be trained to perform simple tricks. Oscar fish are carnivorous and require a diet rich in protein, which can include pellets, live food, and frozen options. They thrive in well-maintained tanks with plenty of hiding spots and prefer a temperature range of 75 to 80 degrees Fahrenheit.