Wide, slow‑moving blackwater stretches near Manaus teeming with Characidium roesseli; easy access from the city and abundant insect hatches make it a beginner‑friendly hotspot.

Best: June‑October

Prime floodplain sections of the Paraguay River in the Pantanal host dense leaf litter habitats where the species thrives; moderate currents require some casting skill.

Best: December‑February

Remote tributary with clear, fast‑flowing riffles; reaching the spot demands a multi‑day trek, but the pristine environment yields healthy populations.

Best: March‑May

Large freshwater lake with extensive marginal vegetation; the species gathers near the shallow bays during the rainy season, making it an accessible yet productive site.

Best: July‑September

Clear, meandering stretches of the upper Orinoco provide ideal substrate and cover; moderate boat access and variable currents suit anglers with some experience.

Best: April‑June

Rocky riffles and submerged roots in the upper São Francisco host abundant Characidium roesseli; reachable by road and small craft, but currents can be challenging.

Best: September‑November