| | InstitutionCode | CollectionCode | CatalogNumber | IndividualCount | ScientificName | Family | PreparationType | Tissues | Latitude | Longitude | CoordinateUncertaintyInMeters | HorizontalDatum | Country | StateProvince | County | Island | IslandGroup | Locality | VerbatimElevation | VerbatimDepth | YearCollected | MonthCollected | DayCollected | Collector | GeorefMethod | LatLongComments | BasisOfRecord | Remarks | DateLastModified |
| | LSUMZ | Fishes | 1 | 11 | Xenotoca melanosoma | | EtOH | | | | | | Mexico | Jalisco | | | | Rio Teuchitlan at Teuchitlan | | | 1970 | 2 | 22 | Miller, Richard R.; Fitzsimons, J. Michael | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 2 | 3 | Gambusia affinis | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Arroyo Huichi E. of Tamuin | | | 1953 | 2 | 3 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 3 | 1 | Xiphophorus variatus | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Choy at Rancho Colandria, 2 mi. W of Tamuin | | | 1952 | 6 | 27 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 4 | 1 | Gambusia affinis | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Choy at Rancho Colandria 2 mi. W of Tamuin | | | 1952 | 6 | 27 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 5 | 13 | Astyanax mexicanus | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Axtla 2 mi. E of Axtla | | | 1952 | 6 | 27 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 6 | 2 | Gambusia vittata | | EtOH | | | | | | Mexico | San Luis Potosí | | | | El Nacimiento del Coy | | | 1952 | 7 | 30 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 7 | 1 | Xiphophorus montezumae | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Axtla at ferry to Xilitla | | | 1954 | 6 | 19 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 8 | 4 | Xiphophorus montezumae | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Axtla at ferry to Xilitla | | | 1951 | 7 | 23 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 9 | 2 | Ataeniobius toweri | | EtOH | | | | | | Mexico | San Luis Potosí | | | | La Media Luna | | | 1954 | 6 | 20 | Gregg, R. T. | | | PreservedSpecimen | In poor condition; recataloged 3/2/74 | |
| | LSUMZ | Fishes | 10 | 7 | Xenotoca variata | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Santa Maria del Rio | | | 1952 | 7 | 7 | Gregg, R. T. | | | PreservedSpecimen | In poor condition; recatologed 3/2/74 | |
| | LSUMZ | Fishes | 11 | 9 | Astyanax mexicanus | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Laguna de las Rusias | | | 1954 | 6 | 21 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 12 | 1 | Gambusia panuco | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Valles at Valles | | | 1952 | 7 | 24 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 13 | 1 | Xiphophorus montezumae | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Claro 5 mi. E of Tamazunchale | | | 1952 | 7 | 21 | Gregg, R. T. | | | PreservedSpecimen | | |
| | LSUMZ | Fishes | 14 | 31 | Gambusia vittata | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Arroyo Huichi E of Tamuin | | | 1953 | 2 | 3 | Gregg, R. T. | | | PreservedSpecimen | Specimen shriveled 3/74 | |
| | LSUMZ | Fishes | 15 | 56 | Gambusia vittata | | EtOH | | | | | | Mexico | San Luis Potosí | | | | Rio Axtla at Ferry to Xilitla | | | 1953 | 2 | 2 | Gregg, R. T. | | | PreservedSpecimen | | |