Rasbora arundinata Lumbantobing, 2014

Family:  Danionidae (Danios), subfamily: Rasborinae
Max. size:  8.6 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater; brackish
Distribution:  Asia: Tripa Jaya, Kluet, and Alas rivers that flow into the Indian Ocean in the southern part of northwestern Sumatra, Indonesia.
Diagnosis:  Dorsal soft rays (total): 8-8; Anal soft rays: 7-7; Vertebrae: 33-34. Can be diagnosed from other species of Rasbora in having a unique black midlateral stripe overall forming a reed-leaf-like profile, consisting of the following: a subdorsal blotch that starts tapering anteriorly from the vertical through the dorsal-fin origin where its dorsal margin appears to be slightly crested, and the tapering extends further anteriorly reaching mid-humeral region via a long pointed anterior tip; a midhumeral diffuse patch in which melanophores concentrate right below the subdorsal blotch and extends anteriorly in a somewhat diffuse fashion to reach the midhumeral region; and a posterior-portion stripe that terminates posteriorly at the area immediately dorsal to the anterior apex of the triangular basicaudal blotch (Ref. 94947).
Biology:  Found in various types of habitats such as gravel-bottomed mountain streams, moderate-flowing turbid rivers, and muddy backwater pools. Occurs sympatrically with Rasbora api, R. kluetensis (only in the Kluet River), R. jacobsoni, and R. truncata (only in the Alas River) (Ref. 94947).
IUCN Red List Status: Least Concern (LC); Date assessed: 07 March 2020 Ref. (126983)
Threat to humans:  harmless

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