Danionidae

Danionidae is a family of freshwater fish commonly known as danionins. They are found in tropical parts of Africa and Asia. This family is part of the order Cypriniformes, which also includes carps and minnows. Danionins are generally small, elongated fish, often with prominent lateral lines. Many species are brightly colored and popular in the aquarium trade.

The diet of danionins typically consists of small invertebrates, algae, and detritus. They are often schooling fish, living in groups in their natural habitats. Their reproduction usually involves the laying of eggs, and many species exhibit little parental care. The family Danionidae includes several well-known genera such as Danio, Devario, and Rasbora. These genera contain a wide variety of species with different physical characteristics and behaviors.

Species within Danionidae are ecologically important in their native freshwater ecosystems, serving as prey for larger fish and contributing to nutrient cycling. In aquaculture and the aquarium hobby, they are valued for their hardiness, ornamental appeal, and relatively simple care requirements. Research into Danionidae has also contributed to our understanding of fish genetics and evolution, with some species serving as model organisms in scientific studies. The diversity within this family highlights the wide range of adaptations found in freshwater fish.