siamese fighting fish youtubeLike other fish they’re plagued by water satisfactory. A small tank is tougher to maintain clean than a larger one, and customarily you can’t put a filter in. Rainwater is usually used. Some people use it successfully, but not all rainwater is safe for fish. Rain, as it falls from the sky in Rural areas is generally good water. When it comes into touch with the roof and gutters and then stays in the rainwater tank with any leaves etc that have washed in, it picks up contaminants.