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Deep body; blunt snout, with sligthly upturned mouth; short dorsal fin
base, 13-15 branched rays; scales small, 34-35 lateral-line scales. Plain
silvery grey with olive or greenish hue, no spots on body; fins dusky; iris
reddish. Attains 30 cm.
ระบบนิเวศ :
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Herbivorous, plant matter and algae grazers. Mainstreams, tributaries and
marshlands. Habitat lost.