The Bloodfin tetra or Glass Bloodfin, is a very appreciated freshwater fish, especially by beginners, as it is very easy to care for.
The Bloodfin Tetra may be a bit shy at the beginning, especially if not kept in a large school, as they are schooling fish, they feel more secure and happy inside a large group.
Being so small, you have the advantage of being able to house several Bloodfins in your tank at a time.