Fish
[1] Polyphyletic taxon; aquatic non-tetrapod Terragen vertebrates, usually though not necessarily with paired fins and with scales. An important component of most Terragen aquatic ecosystems. There have been several successful fish provolves, especially since the Empires Age. However most fishes are subsapient sentient animals.
[2] More generally, alifes, bioships, and xenobiota of fish-like morphotype.
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