Anabas testudineus, commonly known as the climbing perch, is a freshwater fish found in Southeast Asia. It has several synonyms, including Anabas scandens, Colisa scandens, and Perca scandens. In Thailand, it is called "pla salid" and in Malaysia and Indonesia, it is known as "ikan puyu" or "ikan betik." The fish is known for its ability to survive in low-oxygen environments, and it is often used in aquaculture. It has a unique feature of climbing trees and walking on land, which has earned it the nickname "walking fish." Anabas testudineus is also used in traditional medicine for its purported healing properties.