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Betta stigmosa Tan & Ng, 2005 |
| Family: | Osphronemidae (Gouramies), subfamily: Macropodusinae | |||
| Max. size: | 4.11 cm SL (male/unsexed) | |||
| Environment: | benthopelagic; freshwater | |||
| Distribution: | Asia: Terengganu, Peninsular Malaysia. | |||
| Diagnosis: | Dorsal spines (total): 0-1; Dorsal soft rays (total): 8-9; Anal spines: 1-2; Anal soft rays: 21-23; Vertebrae: 28-29. Differs from other members of the Betta pugnax group by the following unique combination of characters: 5-10 regularly spaced black transverse bars on caudal fin of male and female; in life, both male and female with alternating bluish and black transverse bars on dorsal and caudal fins; both male and female with black transverse bars on posterior few anal-fin rays; anal fin with dark distal edge. It shares with B. prima the presence of a second postorbital stripe on opercle; small adult size (3.1-4.1 cm SL); total anal-fin rays 23-24; lateral scales 29-30 (mode 29); postdorsal scales 10-11 (mode 10); pelvic fin length 33.2-51.8% SL; head length 33.6-36.5% SL; interorbital width 29.8-32.1% HL (Ref. 56613). | |||
| Biology: | Found in hill streams (Ref. 56613). | |||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 17 January 2019 Ref. (130435) | |||
| Threat to humans: | harmless | |||