Autapomorphies of Astyanax lineatus:

1. Pectoral-fin bony hooks in adult males of species bearing hooks on fins (310): (0> 1) present. Paralleled in node 268 and in Astyanax cf. asuncionensis, Bario steindachneri, Bryconamericus cf. iheringii, B. rubropictus, Hyphessobrycon luetkenii, H. socolofi, and Phenacogaster tegatus .

2. Dorsal-fin bony hooks in adult males of species bearing hooks on fins (311): (0> 1) present. Paralleled in nodes 248 and 268 and in Astyanax cf. asuncionensis, Bario steindachneri, Bryconamericus rubropictus, Hyphessobrycon luetkenii, H. socolofi, Nematocharax venustus, and Probolodus heterostomus .

3. Caudal-fin bony hooks in adult males of species bearing hooks on fins (312): (0> 1) present. Paralleled in node 268 and in Acrobrycon tarijae, Astyanax cf. asuncionensis, Bario steindachneri, Hyphessobrycon luetkenii, H. socolofi, and Probolodus heterostomus .

Some trees:

4. Maxillary teeth (134): (0> 1) present. (some trees under k 9-14).