Rasbora argyrotaenia (Bleeker, 1849)
Silver rasbora
photo by JJPhoto

Family:  Danionidae (Danios), subfamily: Rasborinae
Max. size:  14 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 6.5 - 7; dH range: 10
Distribution:  Asia: Mekong, Chao Phraya and Mae Khlong basins, Malay Peninsula to Borneo, Java and Sumatra in Indonesia.
Diagnosis:  Dorsal spines (total): 2-2; Dorsal soft rays (total): 7-7; Anal spines: 3-3; Anal soft rays: 5-5. Preserved color yellowish brown with silvery sheen, darker dorsally; scales margined by brown lines or dots. 12-13 scales between nape and dorsal. Lateral line complete reaching caudal; 9 (rarely 8) scale rows between lateral lines over middle of caudal peduncle. Origin of dorsal between tip of snout and caudal; least depth of caudal peduncle 1.9 - 2 in its length. Maxillary not reaching eye. Thin lips, upper moderately protractile; lower sometimes with external projecting knob at symphysis, fitting the notch on upper one.
Biology:  Occurs mainly in rivers and enters flooded fields (Ref. 12975). Feeds on algae (Ref. 12975).
IUCN Red List Status: Least Concern (LC); Date assessed: 28 August 2020 Ref. (130435)
Threat to humans:  harmless
Country info:  Described from specimens, 6.8 - 10.9 cm, collected from Langbuan, Busuanga, in September 1922. Also collected from Lake Manguao, northern Palawan in 1913 and from Puerto Princesa in 1908. Occurs throughout the Calamianes and Palawan (Ref. 2929). Nine specimens were caught with hook and line in Lake Manguao (4.95 to 11 cm) (Ref. 13489). Used in the aquarium trade (Ref. 12157). Also Ref. 7050. Found in the littoral zone of Manguao Lake; gut analysis showed that it is omnivorous and active at daytime (Ref. 050862). Reported from Estrella Falls in Palawan (Ref. 68595).


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