Anostomidae
Commonly known as anostomids , they are found in freshwater habitats from the Río Atrato in northernmost South America to warm-temperate central Argentina; they are of Amazon origin , with few found west of the Andes ( mainly in Colombia and Venezuela ) . 
<triplet> South America <subj> Argentina <obj> has part <triplet> Argentina <subj> South America <obj> part of <triplet> Amazon <subj> South America <obj> continent <triplet> Colombia <subj> South America <obj> part of <triplet> Venezuela <subj> South America <obj> part of