Parosphromenus opallios Kottelat & Ng, 2005

Family:  Osphronemidae (Gouramies), subfamily: Macropodusinae
Max. size:  2.45 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Borneo, Indonesia.
Diagnosis:  Dorsal spines (total): 11-13; Dorsal soft rays (total): 6-8; Anal spines: 11-12; Anal soft rays: 10-11. Dorsal fin with 11-13 spines. Anal fin with 11-12 spines and 10-11 segmented rays. In live male, dorsal, anal and caudal fins with a narrow greenish-bluish margin and a black subdistal band bordered proximally by a blue iridescent band, very narrow in caudal, wider (especially anteriorly) in anal and dorsal. Proximal part of dorsal and anal black along body, grading into red distally, usually forming a conspicuous black blotch at posterior end of dorsal base. Proximal part of caudal fin deep black, grading into bright red patch. Pelvic fin and filament blue (Ref. 56232).
Biology: 
IUCN Red List Status: Endangered (EN); Date assessed: 14 January 2019 (B2ab(iii)) Ref. (130435)
Threat to humans:  harmless


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