Here is a really cool site I found about them
Paradise Fishy LinkThis is what the site says:
"The Paradise fish is fairy easy to keep. They tolerate wide variations in water quality as well as temperature fluctuation's. Unfortunately they are only marginal as a community fish. They must be kept with other similar sized semi- aggressive fish . They will eat most smaller fish and rip the fins of the slower fish like the Angel. A tight-fitting cover is a must as they are accomplished jumpers. Like the Betta males will fight each other often to the death, so only keep one per tank. This species adapts readily to a wide range of foods, including small live foods, such as bloodworms, Tubifex worms, earthworms, glass worms and brine shrimp. They also accept the common flake and frozen foods. It is a good idea to supplement their diets with Spirulina based foods to provide vegetable matter."