FIGURE 2 in A review of the Heteroclinus heptaeolus complex (Pisces: Blennioidei: Clinidae), with three new species and discussion of use of proportions in taxonomic studies

FIGURE 2. Radiograph of skulls of species of the Heteroclinus heptaeolus complex, showing modification and position of pterygiophores and first 3 dorsal spines on skulls of various species.