F I G U R E 2 in Unravelling the taxonomy of an interstitial fish radiation: Three new species of Gouania (Teleostei: Gobiesocidae) from the Mediterranean Sea and redescriptions of G. willdenowi and G. pigra

F I G U R E 2 Comparative morphological overview and lateral line system. (a) Main morphological characteristics of head region of (a) G. adriatica sp. nov. (PMR VP4618 – Holotype), (b) G. orientalis sp. nov. (PMR VP4585 – Holotype), (c) G. hofrichteri sp. nov. (PMR VP4595 – Holotype) and (d) G. pigra (Nardo 1827) (PMR VP3529 – Neotype). (e) Position of pores (bold) and neuromasts (italic) shown on the example of G. willdenowi (Risso 1810) (PMR VP4574 – Neotype) and the main morphological characteristics in the head region of this species. (f) Longitudinal infralateral and suborbital transversal rows of superficial neuromasts can be placed on the well-defined bottom of a deep (+) or shallow (–) groove. U, upper opercular tip; Abbreviations: L, lower opercular tip; SR, supralabial row; NR, nasal row; LIR, longitudinal infralateral; STR, suborbital transversal row; POR, postorbital transversal row; PTR, preopercular transversal row; SLR, subopercular longitudinal row; MR, mandibular row; AVR, anterior ventral row; PVR, posterior ventral row; ADR, anterior dorsal row; PDR, posterior dorsal row; HR, hyomandibular row; SR1, supraopercular row; SR2, suprapectoral row; DLR, dorsolateral longitudinal row; VLR, ventrolateral longitudinal row. Photographs by M. Wagner and M. Kovacˇic