Cave Fish and Minnow: Does Their Appearance Reveal Common Ancestry in Evolution?
The cavefish and minnow show they might share a common ancestry. They have homologous structures, such as fins and gills. Cavefish lack pigmentation and eyesight because they live in darkness. Despite these changes, they retain traits that connect them to their sighted relatives in the aquatic environment. The contrasting appearances of cave fish and minnows … Read more



