Table 1.
Specimens of Gymnotus analyzed. LBP – deposit voucher number at the fish collection of the Laboratório de Biologia e Genética de Peixes, Instituto de Biociências de Botucatu, UNESP. F – females, M – males.
| Species | LBP | Sample Localities | F | M | Coordinates |
| Gymnotus sylvius | 11160 | Água da Madalena - Botucatu-SP River | 20 | 14 | S22°59.25', W48°25.40' |
| Gymnotus sylvius | 11155 | Araquá – Botucatu-SP River | 02 | - | S22°47.13', W48°28.89' |
| Gymnotus sylvius | 11163 | Campo Novo- Bauru-SP River | 01 | 01 | S22°23.07', W49°00.55' |
| Gymnotus sylvius | 11161 | Mogi-Guaçu - Pirassununga-SP River | - | 01 | S21°55.50', W47°22.29' |
| Gymnotus inaequilabiatus | 11154 | Água da Madalena - Botucatu-SP River | 02 | 07 | S22°59.25', W48°25.40' |
| Gymnotus inaequilabiatus | 11158 | Araquá – Botucatu-SP River | 04 | 02 | S22°47.13', W48°28.89' |
| Gymnotus inaequilabiatus | 11152 | Campo Novo - Bauru-SP River | 06 | 13 | S22°23.07', W49°00.55' |
| Gymnotus inaequilabiatus | 11156 | Mogi-Guaçu - Pirassununga-SP River | 06 | 17 | S21°55.50', W47°22.29' |
| Gymnotus pantherinus | 11153 | Aguapeú - Mongaguá-SP River | 03 | 02 | S24°06.40', W46°43.00' |
| Gymnotus cf. carapo | 9836 | Miranda - Pantanal-MSRiver | 03 | 02 | S19°34.34', W57°02.17' |