Danionin
A small freshwater cyprinid fish in the danionin group, a lineage that includes danios and several related genera.
Danioninae: A subfamily of freshwater cyprinid fishes that includes danios and related lineages. Danionins are classified within this broader group of small cyprinid fishes.
Devario: A genus of freshwater cyprinid fishes closely related to Danio, often with elongated bodies and horizontal stripes. Devario is a neighboring danionin genus with species often called danios.
Zebrafish as a model organism: The use of zebrafish in laboratory research on development, genetics, disease, and behavior. The zebrafish is a danionin whose biology supports extensive experimental research.
Fish taxonomy: The classification and naming of fish species and their evolutionary relationships. Danionin genera and subgroups have shifted as fish classification has been revised.
Cyprinidae: A large family of ray-finned fishes that includes carps, minnows, and many related freshwater species. The danionin group belongs to this diverse family.
Esomus: A genus of small Asian cyprinid fishes commonly known as flying barbs. Esomus belongs to the wider danionin assemblage despite its distinct common name.
Aquarium fish: Fish kept in aquariums for display, breeding, or study. Many danionins are widely kept for their small size, active swimming, and vivid patterns.
Phylogenetics: The study of evolutionary relationships among organisms using anatomical and genetic evidence. Phylogenetic analyses help test which genera belong within the danionin group.
Danio: A genus of small freshwater fishes that includes the zebrafish, Danio rerio. Danios are the best-known genus within the danionin group.
Rasbora: A genus of small Asian freshwater cyprinid fishes commonly called rasboras. Rasboras are close relatives whose historical classification has overlapped with danionins.