The eeltail catfish are a family (Plotosidae) of catfish whose tails are elongated in an eel-like fashion. These catfishes are native to the Indian Ocean and western Pacific from Japan to Australia and Fiji. The family includes about 35 species in 10 genera. Wikipedia lists 41 species. About half of the species are freshwater, occurring in Australia and New Guinea.
These fish have eel-like bodies. Their tails are pointed or bluntly rounded. Most species have four pairs of barbels. The adipose fin is absent. The tail fin is formed by the joining of the second dorsal fin, the caudal fin, and the anal fin, forming a single, continuous fin.
- Nelson, Joseph S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7.
- Ferraris, Carl J., Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa 1418: 1–628. Retrieved 2009-06-23.
- Froese, Rainer, and Daniel Pauly, eds. (2007). "Plotosidae" in FishBase. Aug 2007 version.