Fig. 3 in Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species

Fig. 3. Lateral view of the head of cleared-and-stained specimens of (a) Corydoras paleatus, UFRGS 1722, 37.6 mm SL, and (b) Corydoras froehlichi, MCP 13388, 40.2 mm SL, paratype. Abbreviations: io1: infraorbital 1, io2: infraorbital 2, sph: sphenotic, cpt: compound pterotic. Scale bar = 1.0 mm.