Color
Of course there are many color variations for bettas and it is important not choose a betta with dull color. When the betta is stressed/sick, they lose their bright colors.
Eyes
No cloudy eyes or 'popped' eye.
Body
Streamlined body with no white cottony growth nor protruding scales(signs of dropsy).
Fins
Fins should not have pin holes, tears or uneven edges. Fins should not be clamped which shows signs of ill health.
Behavior
The betta should be swimming actively and not lying in the bottom of the tank or floating sideways near the water surface.
Good luck on betta hunting....
