Systomus asoka (Kottelat & Pethiyagoda, 1989)
Asoka barb
Systomus asoka
photo by Hippocampus-Bildarchiv

Family:  Cyprinidae (Minnows or carps), subfamily: Smiliogastrinae
Max. size:  17 cm TL (male/unsexed)
Environment:  benthopelagic; freshwater; pH range: 6.5 - 7.5; dH range: 1 - 18; depth range 1 - 2 m
Distribution:  Asia: upper reaches of the Sitawaka River and its tributaries, and Kelani near Kitulgala, Sri Lanka.
Biology:  Found in relatively deep (1-2 m) fast-flowing water, in areas with gravel or sand substrates. Juveniles (1-3cm TL) shoal together in schools of 30-100 individuals in very shallow water (5-25 cm), downstream. Adults occupy deeper water (1-2m), upstream. Usually occupies unshaded areas. Fast swimmers and not easily identified from water surface. Declining numbers due to intensive fishing by fish exporters.
IUCN Red List Status: Critically Endangered (CR); Date assessed: 29 July 2019 (B1ab(iii)) Ref. (124695)
Threat to humans:  harmless
Country info:   

Entered by: Cruz, Tess - 31.07.92
Modified by: Reyes, Rodolfo B. - 27.01.14
Checked by: Palomares, Maria Lourdes D. - 11.02.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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