Males have longer fins and are more colorful than females, which are rarely seen in pet stores. Care Bettas are easily cared for and will prove quite hardy if their basic needs are met. They can live in a wide temperature range, from the low 70's to the low 80's, the key is to keep their water temperature constant. Bettas are unique in that they breathe air from the water's surface, and do not pull oxygen from the water like most fish. They will fight and tear each other's fins until one or both are dead.
Females can live together peacefully.
Care should be taken that the betta is not harrassed in a community tank, often other fish will nip at their fins. Feeding Bettas are carnivores, and need a varied diet to look their best. They will eat a variety of foods, flake, premade betta foods, brine shrimp, and blood worms. If possible, the occasional feeding of live foods will be much appreciated by your betta. There are many hobbyists breeding and coming up with new betta colors and forms.