The catfish is favored by taste researchers due to its abundance of sensory receptors distributed across its skin. This multitude of receptors allows the catfish to detect flavors in its environment while it swims. According to Rawson, catfish can be described as "swimming tongues," highlighting their unique adaptation for food detection.

This adaptation is particularly beneficial for catfish, which often locate their food by feeling it with their bodies. Many species of catfish scavenge on debris found at the river's bottom, making their heightened taste sensitivity essential for survival in their aquatic habitat.