Melanotaenia synergos Allen & Unmack, 2008
Melanotaenia synergos
photo by Giles, L.

Family:  Melanotaeniidae (Rainbowfishes, blue eyes)
Max. size:  6.71 cm SL (male/unsexed)
Environment:  pelagic; freshwater; depth range 0 - 3 m
Distribution:  Asia: Indonesia.
Diagnosis:  Dorsal spines (total): 4-6; Dorsal soft rays (total): 11-14; Anal spines: 1-1; Anal soft rays: 19-22. This rainbowfish is distinguished by the following set of characters: D IV to VI-I,11-14; A I,19-22; pectoral rays 13 or 14; lateral scales 31-33 (often 33); colour generally brownish on back (blue in life), pale tan or whitish below with blackish (bluish black in life) midlateral stripe from upper edge of preopercle to caudal-fin base, covering about one and a half scale rows for most of its length and more strongly contrasted in males (Ref. 74958).
Biology:  Inhabits narrow (to about 15-20 m wide), clear rivers with gradual gradients flowing initially through second growth forest, but entering primary, nearly closed canopy forest after about 1 km upstream from the sea. Collected from deeper pools (to about 2-3 m) over limestone cobble/-gravel bottoms with slow to moderate flow rates; temperature of 25.5° and pH 8.7 (Ref. 74958).
IUCN Red List Status: Vulnerable (VU); Date assessed: 03 December 2019 (D2) Ref. (130435)
Threat to humans:  harmless


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