Knowra Characidae Characidae Characidae is a family of freshwater ray-finned fishes in the order Characiformes. It includes many tetras and, in modern classifications, some piranhas and their relatives.
Characiformes : An order of mostly freshwater ray-finned fishes native to Africa and the Americas. Characidae is one family within this diverse fish order.
Neon tetra : A small South American freshwater fish known for its iridescent blue stripe and red lower body. It is one of the best-known aquarium species traditionally placed in Characidae.
Pharyngeal teeth : Teeth in the throat region of fishes that grip, crush, or process food. Variation in these teeth helps characids exploit different diets.
Aquarium fish : Fish kept in aquariums for display, study, or breeding. Small, colorful characids are among the most widely kept freshwater aquarium fishes.
Molecular phylogenetics : The reconstruction of evolutionary relationships using DNA or other molecular data. Genetic studies continue to test which lineages properly belong within Characidae.
Actinopterygii : The class of ray-finned fishes, whose fins are supported by slender bony rays. Characidae belongs to this much larger group of fishes.
Piranha : A group of South American freshwater fishes known for deep bodies, strong jaws, and sharp teeth. Several piranha lineages are classified within Characidae.
Carnivory : A feeding strategy in which animals obtain nutrients by eating other animals. Predatory characids, including piranhas, use specialized jaws and teeth to capture animal prey.
Ornamental fish trade : The commercial capture, breeding, and sale of fishes for decorative aquariums and ponds. Demand for tetras and other characids supports a substantial international trade.
Cryptic species : Distinct evolutionary species that are difficult to distinguish by outward appearance alone. DNA comparisons can reveal hidden diversity among similar-looking characids.
Show all 25