The bloodfin tetra (Aphyocharax anisitsi) is a species of characin from the Paraná River basin in South America. The bloodfin is a relatively large tetra, growing to 5.5 cm. Its notable feature (as the name suggest) is the blood-red colouration of the tail, dorsal, anal and adipose fin, while the body is silver in color.\n\nBloodfin tetras are typically kept in schools of five or more. They swim mainly in the upper and middle water layers and are highly sociable fishes, mixing well with other types of tetras and tropical fish in general, so are often kept (like many other tetras) in a community tank. However, they will tend to nip at the fins of fish with long, wavy fins, such as angelfish or guppies. Bloodfin tetras have also been kept in cold-water tanks, provided the temperature does not drop below room temperature.\n\nSource: Wikipedia contributors. (2019, July 22). Bloodfin tetra. In Wikipedia, The Free Encyclopedia. Retrieved 04:19, October 19, 2019, from https://en.wikipedia.org/w/index.php?title=Bloodfin_tetra&oldid=907417049
