These little fish are awesome, i have two schools one medium one very large and they are extremely active, they are very aggressive feeders and will out compete almost any other fish in their tank when in a big enough school, keeping with a large semi aggressive fish is a good idea along with a school of bottom dwellers, mine typically don't like brighter lights and hide under the canopies of my plants when i thin out floaters, they are very exciting and hardy fish and breed readily in near perfect water conditions and with top quality food, mine eat ocean nutrition marine foods and breed quick, they are also housed in softer water than my other tanks. overall great fish and i would recommend them for any beginner looking for a very active fish. give them time to get used to your tank and don't change it on them they are skittish at first =] i might add the better the water the better the color of fins
The tightest schooling tetra, period. You don't need a heater with these guys, they can take temperatures in the low 60s/high 50s easily. Bloodfins aren't quite as colorful as neons or cardinals, but they make up for it with their awesome schooling behavior and ease of care.
i started out with a small school in a well established tank but for some reason all but 1 died rather soon (might of been something with the pet store since there was a healthy survivor) now he schools with my new tiger barbs and seems much happier now.