Characidae
A family of fresh water fish in the order CHARACIFORMES, which includes the Tetras.
Fishes
A group of cold-blooded, aquatic vertebrates having gills, fins, a cartilaginous or bony endoskeleton, and elongated bodies covered with scales.
Myxobolus
Rivers
Large natural streams of FRESH WATER formed by converging tributaries and which empty into a body of water (lake or ocean).
Brazil
I'm sorry for any confusion, but "Brazil" is not a medical term or concept, it is a country located in South America, known officially as the Federative Republic of Brazil. If you have any questions related to health, medicine, or science, I'd be happy to help answer those!
Protozoan Infections, Animal
Fresh Water
Water containing no significant amounts of salts, such as water from RIVERS and LAKES.
Gills
Paired respiratory organs of fishes and some amphibians that are analogous to lungs. They are richly supplied with blood vessels by which oxygen and carbon dioxide are exchanged directly with the environment.