Food Resource Used by Small-Sized Fish in Macrophyte Patches in Ponds of the Upper Paraná River Floodplain - DOI: 10.4025 actascibiolsci.V31i2.3266. Acta Sci. Biol. Sci. 2009, 31 (2), 119-125. https://doi.org/10.4025/actascibiolsci.v31i2.3266.