Oligobranchs
Oligobranchs are a group of teleost fish belonging to the order Perciformes. The name "oligobranch" translates to "few gills" and refers to a characteristic reduction in the number of gill filaments. This is a distinguishing feature of this group, which includes a variety of marine and freshwater species. Oligobranchs are found in diverse habitats across the globe, from coral reefs to freshwater rivers. They exhibit a wide range of body shapes and sizes, reflecting their varied ecological niches.
The taxonomic classification of oligobranchs is complex and has been subject to revision. Historically, they were