Curimatopsis is a genus of small characins in the family Curimatidae, native to river systems across northern and central South America, with atlas records from Brazil, Venezuela, Bolivia, Colombia, Argentina, Ecuador, French Guiana, and Guyana. The 11 species covered here are small, generally 1–2.5 in, silvery, deep-bodied fish that shoal in open water and along riverbanks. Like other curimatids, Curimatopsis species lack teeth in the jaws and instead feed by sifting fine organic detritus and algae from sediment, a diet very different from the more typical omnivorous or predatory habits of many other characins.
Curimatopsis is chiefly of ecological and scientific interest rather than a hobby fish; only Curimatopsis macrolepis, the shinyscaled curimata, carries a widely used common name in the atlas, and most species are documented mainly through ichthyological surveys of Amazon and Orinoco tributaries rather than the aquarium trade. As detritus feeders, curimatids like this genus play an understated but important role in processing organic material within their river ecosystems. Conservation data remain thin: 8 of the 11 atlas species are still Not Evaluated, with the remaining 3 rated Least Concern.