1. plural of arapaima; large freshwater fish native to the Amazon Basin, among the largest freshwater fish in the world

Examples

• The arapaimas in the aquarium attracted crowds of visitors.
• Scientists are studying the breeding patterns of arapaimas in the wild.
• Local fishermen have reported seeing fewer arapaimas in recent years.
• The zoo’s new exhibit features two massive arapaimas.
• Conservation efforts aim to protect arapaimas from overfishing.
• Arapaimas can grow up to 15 feet in length and weigh over 400 pounds.