There are species which are preserved in captivity but the entire natural distribution has been destroyed, e.g. some mexican live bearers where the whole river they originally lived in is now used as either a sewer or for irrigation.
The number of such species grows every year, e.g. Hypancistrus zebra who used to live where the Altamira hydropower station now is. Arguably the familiar Axolotl belongs in this group too, as the lake where it once lived is now too polluted to support axolotls.
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