Serpae Tetra is a beautiful glittering species but has a bad reputation for being a fin-nipper. This will present a problem where fancy long-finned fish are concerned, so choose tankmates with care. The "nippiness" can be controlled to a degree by keeping larger shoals (10+ fish) in larger tanks with plenty of décor and plant life to create "visual barriers", although fish with very long trailing fins would still not be recommended. For those fishkeepers who like the appearance of the Serpae Tetra, but not the aggression level, you could consider the Red Phantom Tetra instead (providing its temperature requirements are compatible with that of the others species you are keeping).
 
Feeding
Easy to feed "“ will eagerly accept most foods offered. Vary the diet with flake, micropellets and small frozen foods such as daphnia and mosquito larvae.