Pincerna yanseni n. sp. is described from six localities in west Sumatra, Indonesia. Shell characters, including a cross-sectional view of the breathing tunnels, as well as the operculum and radula are described and illustrated. Surprisingly, this new species is most similar to northeastern Indian species assigned to the genus Cycloryx Godwin-Austen, 1914. The main shell characters of Cycloryx and Pincerna (ovately conoid shells shape; regular ribbing on the upper whorls; extremely short, often clubbed or pear-shaped sutural tube) are remarkably similar. Therefore, Cycloryx is designated as a junior synonym of Pincerna Preston, 1907, herein

A new species of Amolops is described from northwestern Vietnam based on morphological and molecular differences. Morphologically, the new species is distinguishable from its congeners on the basis of a combination of the following diagnostic characters: Snout–vent length 37.5–41.3 mm in males, 61.5–62.5 mm in females; head longer than wide; vomerine teeth present; snout long (ratio of distance from tip of snout to anterior corner of eye/ snout–vent length 0.16 in males, 0.15 in females); tympanum distinct, round (ratio of eye diameter/tympanum diameter 0.37–0.39 in males, 0.36–0.37 in females); skin smooth; supratympanic fold indistinct; dorsolateral fold present; webbing formula I0―1/2II0―1III0―1IV1―0V; in life, dorsum grey with indistinct greenish dots; head and body with irregular dorsolateral brown stripe; dorsal surface of forelimbs and hindlimbs bright grey with dark brown crossbars; throat, chest and belly white; vocal sac yellowish; external vocal sac present and finger I with nuptial pad in males. In phylogenetic analyses, the new species is recovered as a sister taxon to A. compotrix, but the two species are separated by 3.3–3.4% pairwise genetic divergence based on a fragment of the mitochondrial ND2 gene.

A new species of Amolops is described from northwestern Vietnam based on morphological differences and molecular divergence. Morphologically, Amolops ottorum, new species, is distinguishable from its congeners on the basis of a combination of the following diagnostic characters: size small (SVL 47.5–48.2 mm in females); head longer than wide; vomerine teeth absent; snout short (SE/SVL 0.14–0.15); tympanum dark brown, small (TD/ED 0.36–0.37 in females); skin smooth; supratympanic fold absent; dorsolateral fold absent; webbing formula I 0―1/3 II 0―1 III 0―1 IV 2―0 V; in life, dorsum green with some dark brown spots; flanks with irregular dark markings; head and body with irregular dorsolateral cream stripe; dorsal surface of fore and hind limbs green with dark crossbars; throat, chest, anterior part of belly light-cream with brown dots; and posterior part of belly cream. In phylogenetic analyses, the new species is weakly supported as a sister taxon of Amolops tuberodepressus, and approximately 5.6% divergent from it based on a fragment of the cytochrome b gene.

Anaglyphula yanseni, new species, is described and illustrated based on specimens collected from Babi Island, off the west coast of Sumatra, Indonesia. The new species mostly differs from its congeners having similarly pitted surface sculpture by its small size. Additionally, Anaglyphula cancellata Rensch, 1932, the type species of the genus, is redescribed based on the type materials. The diagnostic features of Anaglyphula are also discussed in comparison with those of similar genera.

A new species of Betta from the B. waseri group is described based on a single specimen from Singkep Island. It appears to be closely allied to B. spilotogena. Betta andrei, new species, differs from B. spilotogena in having a different throat pattern, comprised of a black lower jaw, continuous with a large pitcher-like pattern on throat, ending with a protruding segment on buccal membrane (vs. isolated teardrop shaped black mark on throat); opercle uniform brown with dark brown spots along posterior margin; faint black transverse bars on the dorsal- and caudal-fin interradial membranes; absence of a dark distal border on anal fin.