Does a Kissing gourami fish need a filter?
Yes. Just as humans need clean and uncontaminated air to live in and breathe, all fish need clean and uncontaminated water to live in and breathe too. The purpose/use of a filter is required to remove the natural poisons from the water that all fish make simply by living, eating, pooing and breathing in the water. If you could give the fish a constant flow of pure, clean, unadulterated water, then there would be no need for filters.
