The sword-tailed coelacanth (Rebellatrix neodivaricerca, name meaning "new rebel coelacanth (with a) forked tail", after the unique tail fin), also known as the rebel coelacanth, is a species of large prehistoric coelacanth that originally lived from the Lower Triassic Sulphur Mountain formation and Wapiti Lake Provincial Park of British Columbia and was once extinct, but has since been brought back from extinction by SciiFii and introduced to the modern Pacific coasts of North America. It is the only known living species of the family, Rebellatricidae, and originally was an extinct species, Rebellatrix divaricerca. Its most distinguishing feature is its tuna-like forked tail (unusual for an actinistian fish), which allows a fast-swimming and active lifestyle, unlike most coelacanths related to the native modern species. The sword-tailed coelacanth usually reaches 1.30 metres (4 ft 3 in) in length when fully grown. In addition to its uniquely forked (and symmetrical) tail fin, the posterior dorsal fin is behind the anal fin rather than opposite it. The sword-tailed coelacanth is a fast-swimming predator, since its tail is built for speed, and native modern coelacanths only use the tail fin when attacking prey, and the sword-tailed coelacanth fills the niche similar to its rivals such as tunas and medium-sized sharks. It is a solitary animal in most of its life, except during breeding seasons, when males and females congregate in shoals in order to mate. The conservation status of the sword-tailed coelacanth is Least Concern due to successful conservation efforts and the sword-tailed coelacanth's wide range.
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