Betta midas Tan, 2009

Family:  Osphronemidae (Gouramies), subfamily: Macropodusinae
Max. size:  6.6 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 4.1; depth range 0 - 2 m
Distribution:  Asia: lower Kapuas basin in west Kalimantan, Indonesia; possibly Sambas river basin; and extreme western part of Sarawak, in heathforest streams near the town of Lundu.
Diagnosis:  Dorsal spines (total): 1-1; Dorsal soft rays (total): 8-10; Anal spines: 1-2; Anal soft rays: 25-29; Vertebrae: 31-32. Can be distinguished in possessing the following combination of characters: relatively thick-set body (body depth 24.3-29.0 % SL); head devoid of pattern except for black stripe that runs from black lower lip, through eye to edge of opercle; opercle with gold iridescent scales when live; belly and body with gold iridescent scales; some median caudal rays projecting beyond fin margin (Ref. 81926). Description: dorsal fin situated far back; caudal fin lanceolate; pelvic fin filamentous (Ref. 81926).
Biology:  A paratype series was collected from a blackwater river running through remnant and intact peat swamp forest, with pH 4.1(Ref. 81926).
IUCN Red List Status: Vulnerable (VU); Date assessed: 05 December 2018 (B1ab(iii)) Ref. (130435)
Threat to humans:  harmless


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