The study animal of choice for taste researchers is the catfish,* simply because it has so many receptors. They are all over its skin. "Catfish are basically swimming tongues," says Rawson. It is a useful adaptation for a limbless creature that locates food by brushing up against it; many catfish species feed by scavenging debris on the bottom of rivers.
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...