Sundadanio axelrodi (Brittan, 1976)
Sundadanio axelrodi
photo by Hippocampus-Bildarchiv

Family:  Sundadanionidae (Tiny danios)
Max. size:  2.25 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Borneo, Bangka and Sumatra.
Diagnosis:  Dorsal soft rays (total): 9-9; Anal soft rays: 9-9; Vertebrae: 34-35. Semicircular indentation present on the ventromedian flange of the dentary. Branched anal rays 5. Weberian apparatus with the 4th centrum extending well below the fused 2nd + 3rd centra. Sexual dichromatism conspicuous; melanophores in males are a little stronger, and the erythrophores and iridophores are much more developed. When disturbed, repeated croaking sounds are produced. No lateral line pores nor barbels (Ref. 38434).
IUCN Red List Status: Vulnerable (VU); Date assessed: 04 January 2019 (B1ab(i,ii,iii)+2ab(i,ii,iii)) Ref. (126983)
Threat to humans:  harmless

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