Saccodon is a genus of characins in family Parodontidae, the scrapetooth characins, found in fast-flowing Pacific-slope and Andean piedmont streams - the atlas records it from Ecuador, Colombia, and Panama. Like its relatives, it has a torpedo-shaped body, a flattened head, and a downturned, specialized scraping mouth used to rasp algae and biofilm off rocks in riffles and rapids, a feeding style that converges with loaches occupying similar niches elsewhere in the world. Atlas species are small, running 1.5–6.5 in.
This is a genus of scientific and ecological interest rather than an aquarium staple: current-loving, algae-grazing rheophiles of this kind are demanding to keep (strong flow, high oxygen, clean water) and essentially absent from the hobby trade. Conservation looks reasonably stable where assessed - the brief's tally is 2 Least Concern and 1 Data Deficient, the latter reflecting how poorly studied some of these small stream fish remain.