Native Ranges provided starting in Version 2

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In 2022 we held additional meetings to expand our native ranges into an enlarged study area and revise them to reflect the large number of new records in the database from the addition of the Track 3 data and revisions to the Track 1 and 2 data (mostly taxonomic re-determinations and updated georeferences). The updated native ranges were introduced with our Version 3 of the website along with the Track 3 data.  Efforts to more precisely georeference our oldest records, collected in the mid-1800’s, greatly improved the accuracy of our native ranges.

Methods were generally the same as our 2017 effort, but we used QGIS software rather than ArcGIS (ESRI). All freshwater species in our study area were assessed in 12 meetings held on June 30 through July 26 by combinations of the between 2 and 8 (mode=6) people experienced in fishes of our region including,: Adam Cohen (12), Doug Martin (10), Roy Kleinsasser (9), Gary Garrett (8), Chris Taylor (8), Megan Bean (4), Kevin Conway (3), Bob Edwards (3), Melissa Casarez (3), Dean Hendrickson (1), and Chris Hoagstrom (consulted for single species). During these meetings we re-determined or determined native ranges, flagged records for examination, as suspect, as captive and/or for re-georeferencing (and other less common data errors). For native ranges of marine species, we relied heavily on the Smithsonian Tropical Research Institute’s website, Shorefishes of the Greater Caribbean Online Information System, which provides native ranges for most Gulf of Mexico species in our study area.

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Tilton, J. E. 1961. Ichthyological Survey of the Colorado River of Texas. Masters Thesis, University of Texas at Austin. http://dx.doi.org/10.26153/tsw/17774

Treviño-Robinson, D. 1959. The ichthyofauna of the Rio Grande, Texas and Mexico. Copeia 1959:253-256.

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