Dario hysginon Kullander & Britz, 2002
Dario hysginon
photo by Udomrittiruj, K.

Family:  Badidae (Chameleonfishes)
Max. size:  3 cm NG (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Myanmar.
Diagnosis:  Dorsal spines (total): 14-15; Dorsal soft rays (total): 5-7; Anal soft rays: 5-8; Vertebrae: 24-26. Body color usually uniform or with weak reticulate pattern formed by dark scale margins, very rarely any vertical bars. No caudal, cleithral or opercular blotches. Lateral line scales usually 23, rarely 22 or 24; transverse scale row 8.5; vertebrae usually 25. Palatine teeth absent. Anguloarticular lateralis canal present. Males with black blotch anteriorly in dorsal fin (Ref. 46238).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 26 March 2010 Ref. (130435)
Threat to humans:  harmless
Country info:  Collected in the northern part, with sampling localities in and near Myitkyina and Indawgyi Lake, and near Mandalay in the central part. It is most abundant in small pools with extensive vegetation, and where co-occurring with other Badis species, it occupies the more quiet areas. Largest sample (406 specimens) obtained from pools around fish ponds near Myitkyina, with shallow, turbid water and abundant areas of submersed grass. Both here and in the pools adjacent to Indawgyi Lake, it lives with air-breathing species, indicative of low oxygen conditions. Type locality, Nan Kywe Chaung under bridge on road south to Mogaung, Irrawaddy R. drainage, Myitkyina Distr., Kachin State (Ref. 46238).


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