Astrodoradinae

Higuchi, Horácio, Birindelli, José L. O., Sousa, Leandro M. & Britski, Heraldo A., 2007, Merodoras nheco, new genus and species from Rio Paraguay basin, Brazil (Siluriformes, Doradidae), and nomination of the new subfamily Astrodoradinae, Zootaxa 1446, pp. 31-42 : 33

Astrodoradinae , new subfamily

Type genus. — Astrodoras Bleeker, 1862: 5 .

Genera included. — Amblydoras Bleeker, 1862 ; Anadoras Eigenmann, 1925 ; Astrodoras Bleeker, 1862 ; Merodoras new genus; Hypodoras Eigenmann, 1925 ; Physopyxis Cope, 1871 ; and Scorpiodoras Eigenmann, 1925 .

Diagnosis. — The genera and species of the subfamily Astrodoradinae can be distinguished by the following combination of characters: spinous postcleithral process (except in Anadoras ); lacrimal serated (except in Anadoras ), forming anterior corner of orbit (except in Physopyxis ; also present in Pterodoras and Lithodoras ); number of pleural ribs reduced, four to seven (also shared with Acanthodoras , Agamyxis , Trachydoras , Doras fimbriatus , D. punctatus and Oxydoras eigenmanni ). Other diagnostic, but more widespread, features include: simple barbels, nuchal foramina absent, and gas bladder with abbreviated cordiform shape.