Eel (order Anguilliformes), any of more than 800 species of teleost fishes characterized by elongate wormlike bodies. Anguilliforms include common freshwater eels as well as the voracious marine morays. Discover the fascinating world of eels as pets and learn about their habitat, aquarium setup, diet, breeding, health, social structure, and more in this comprehensive eel care guide. Everything you should know about the Eel. The Eel is a fish that looks something like a snake, with its long, slender body, with a fin along the top. Eels are fish with elongated, slender bodies. Around 800 species of eels belong to the group of fish called Anguilliforme and are found all around the world. Eels have very interesting life cycles and complete immense migrations beginning as drifting larvae. A number of species spend distinct periods of their lives in both marine and freshwater habitats. Different species grow to various sizes but the largest species can weigh more than 20 kg and reach lengths of more than 3.5 m. Eels are ...
