👉 Tonguefishes are a group of marine invertebrates, including the common and spotted tonguefish. They are known for their unique appearance and behavior, which includes the ability to swim without using any fins or limbs at all. These fish have a long, flexible mouth that is used for eating, as well as a unique head shape with two long, flat fins that help them navigate through the water. Despite being small in size, tonguefishes are highly adapted to their environment and play