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Yirang et al. 2025 (3)

Description: Dorsal soft rays (total): 6; Anal soft rays: 8 - 9. This species is distinguished from its congeners by the following set of characters: rhomboid shaped thoracic adhesive apparatus, with a cone type median depression without striae and widely openes posteriorly; unculiferous ridges of adhesive apparatus not extending anteriorly onto gular region; plicae on ventral surfaces of first pectoral and pelvic fins rays present, maxillary barbel almost reaching posterior end of the pectoral fin; outer mandible barbel reaching pectoral fin; three pale cream longitudinal stripes on dorsal present; lateral and ventral sides of the body; tuberculated body; head length 23.8, 24.7% SL; post adipose distance 12.0, 12.9% SL; nasal barbel length 19.2, 21.6% HL; slender caudal peduncle 7.0, 7.4 % SL; height of anal fin 16.4, 17.3 % SL; caudal peduncle 19.9, 20.5 % SL; body depth at dorsal-fin origin 15.4, 15.7 % SL; and caudal fin length 32.0, 32.6 % SL. Body shape (shape guide): elongated (Yirang et al. 2025). Habitat: Presently known only from the type locality of Sikhu River, a tributary of Siang River, Brahmaputra River basin, Siang District, Arunachal Pradesh, India (Yirang et al. 2025). Etymology: Specific name dihangensis: Named after Dihang (Siang) River, where first collected this species.

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Sisoridae

South Asia: Siang River drainage, Brahmaputra River basin, Arunachal Pradesh, India. Type locality: Sikhu River, a tributary of Siang River, Brahmaputra River basin, Siang District, Arunachal Pradesh, India.

9.5cm. (3¾ins)

18-23°c (63-73°f.)

6.0-7.0.

Fish in the News 2025.
Yirang, Y., Singh, S., Tudu, A. K., Kashyap, S., Tajo, T., & Debbarma, S. (2025). Glyptothorax dihangensis, A New Sisorid Catfish, (Teleostei: Sisoridae) from Arunachal Pradesh, North-Eastern India. Records of the Zoological Survey of India, 125(2S), 23–34.