sicklefin
Sicklefin refers to a characteristic fin shape found in certain species of fish. This term describes a dorsal or pectoral fin that is elongated and curved, resembling a sickle or a scythe. The curvature can vary in degree among different species, but the general impression is one of a sweeping, sharp angle.
Several fish families exhibit sickle-shaped fins. For instance, some species within the characin family, which includes