Excuse me, arowana, piggy and lucky fish. Can we raise them together? What other fish can I add?

Can fly warships, parrots, Thai tigers, all very beautiful. They all started in eat small fish, and the best are small river fish and shrimp. Loach is almost the same. Raising water before raising fish means that fish live in water. When the water is made, the fish will naturally live. That's what it means. Keep water, don't change it frequently, add it frequently and change it less. The replaced water should have the same temperature as the water in the original water tank. Don't always wash the filter cotton, just feed the nitrifying bacteria with the fish manure on the filter cotton. If the filter cotton really can't get through the water, take the water from the fish tank and wash it gently. Don't use tap water.