New Guinea mudskipper (Periophthalmus novaeguineaensis)

Biology

Dorsal spines (total): 10 - 15; Dorsal soft rays (total): 12-13; Anal spines: 1; Anal soft rays: 10 - 11. This species is distinguished by the following characters: D1 modally XI; D2 modally I,12; A modally I,11; caudal fin modally with 17 segmented rays; 71-110 lateral scales; 25-32 predorsal scales; inner rays of pelvic fin always united for more than three-quarters of their length; color of first dorsal fin red-brown or black, with broad, black submarginal stripe and white distal margin, the posterior edge concave, giving triangular shape to fin; color of second dorsal fin with whitish margin and one broad, black sub-marginal band and basal row of black spots; anal, pectoral, or caudal fins usually no markings, small brown spots or dusky pigment along length of fin or fin rays in some individuals; pelvic fin with prominent frenum and heavily pigmented on dorsal surface, with narrow, yellowish to whitish marginal band.

Source: FishBase, licensed CC BY-NC 4.0.