Features of Fish: What Is a Fish?

This colorful, lively series of videos explores the fascinating features of fishes. The major characteristics of this widely diverse group of vertebrates are described through the use of live-action video. Special attention is paid to the major groups of fishes and their unique features. Concepts and terminology include: ectothermic, scales, swim bladder, olfactory lobe, lateral line, gills, anadromous, ichthyologist, agnatha, lamprey, hagfish, chondrichthyes, cartilage, shark, skate, ray, osteichthyes, lobe-finned fishes, lungfishes, and ray-finned fishes.