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|Jumpstarting Recovery of the Threatened Santa Ana Sucker: Step 1: Translocation Plan
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|Fisheries Success Stories?
|Freshwater native fish
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The Santa Ana sucker (Catostomus santaanae) is endemic to the Los Angeles, San Gabriel, Santa Ana, and parts of Santa Clara river watersheds. Populations range-wide have been negatively affected by habitat loss, degradation, and conversion through hydrological modifications, as well as non-native fish species. In particular, isolation by impassable barriers or unsuitable habitat limits gene flow within and between watersheds, thus increasing the risk of extirpation. Consequently, SAS populations have declined in Southern California, and their distribution has been greatly reduced in the watersheds where they occur.