Autapomorphies of Axelrodia lindeae:

1. Contact between frontals anteriorly to frontal fontanel (21): (1> 0) absent. Paralleled in Aphyocharax nattereri and Aphyodite grammica .

2. Ventral extent of third infraorbital (64): (0> 1) not reaching horizontal arm of preopercle, at least anteriorly. Reversal of synapomorphy 2 of node 198. Paralleled in nodes 280 and 298 and in Aphyodite grammica, Bryconamericus rubropictus, and Creagrutus cf. tahorni.

3. Morphology of premaxillary, maxillary, and dentary teeth (118): (1> 0) all teeth conical, caniniform or mamilliform. Paralleled in the Heterocharacinae, in nodes 174, 181, and 211, and in Grundulus cochae and Exodon paradoxus .

4. Position of anterior teeth of dentary (146): (0> 1) internally situated with dentary forming anterior ridge.

5. Bony lamellae between second and third basibranchials (184): (1> 0) absent. Paralleled in the Serrasalmidae and in Attonitus ephimeros, Hollandichthys multifasciatus, Hoplocharax goethei, Jupiaba scologaster, Piabucus melanostomus, Pyrrhulina australis, Rhaphiodon vulpinus, and Xenagoniates bondi .

6. Bony lamella dorsal to fourth basibranchial (185): (0> 1) absent. Reversal of synapomorphy 3 of node 203. Paralleled in node 296 and in Gymnocharacinus bergii, Hollandichthys multifasciatus, Mimagoniates rheocharis, Nematocharax venustus, Paracheirodon axelrodi, and Prodontocharax melanotus .

7. Denticles on gill rakers (201): (0> 1) absent. Paralleled in the Gymnocharacinae, in nodes 245 and 253, and in Pseudochalceus kyburzi . Some trees: Paralleled in Hyphessobrycon elachys and H. herbertaxelrodi .

8. Shape of dentigerous plate of fifth ceratobranchial (204): (1> 0) rounded, with posterior notch. Paralleled in the Iguanodectinae and in node 252.

9. Number of branched pelvic-fin rays (258): (1> 0) six or less. Paralleled in the Aphyocharacinae, in nodes 220, 236, 280, and 302, and in Cheirodon interruptus, Cyanocharax alburnus, Hollandichthys multifasciatus, Hoplocharax goethei, and Hyphessobrycon luetkenii . Some trees: Paralleled in Hasemania nana and Hyphessobrycon elachys .

10. Ventral procurrent caudal-fin rays of adult males (301): (0> 1) laminar. Paralleled in node 229.

11. Ventral procurrent caudal-fin rays of adult males (303): (0> 1) projecting ventrally through peduncle musculature and skin. Paralleled in node 229 and in Hoplocharax goethei .

12. Bony hooks on last pelvic-fin ray of adult males (314): (0> 1) as numerous as in other rays. Paralleled in nodes 232, 240, 258, and 299.

Some trees:

13. Number of cusps of anterior maxillary teeth (138): (1> 0) conical, a single cusp. (k9-12). Paralleled in Pristella maxillaris . Some trees: Paralleled in Aphyodite grammica .

14. Rows of gill rakers on second ceratobranchial (193): (1> 0) one. (k13-14). Paralleled in nodes 238 and 253 and in Bryconamericus exodon .