Gjellerup'S Tandan

Dorsal spines (total): 1; Dorsal soft rays (total): 6 - 7; Analspines: 0; Analsoft rays: 75 - 93

Mainly restricted to headwater streams in hilly or mountainous terrain. Prefers clear, fast-flowing streams, usually in deep rocky pools. Can ascend torrential steep-gradient streams and small waterfalls.

Tandanus equinus (Weber, 1913)

USNM 217100, Fly 75–7, 12: 100–360 mm (1 to AMNH).

USNM 217101, Fly 75–8, 19: 127–288 mm.

USNM 217102, Fly 75–10, 3: 124–259 mm.

USNM 217103, Fly 75–11, 2: 120–136 mm.

Neosilurus equinus, the southern tandan, is a species of fish in the eeltail catfish family. It occurs in streams in Papua and Papua New Guinea.: 184  It can be found in Lake Kutubu.