discover the main problem why the male fish wasnt eating..... i dip the water into the qurantine tank and found that the water was icy cold. Looks more like juz added ice cube into it. In the end i add the two fishes into my main tank(with heater) and find it feeding on wildly together with my home guppies.but there is still abnormalities within the mozaic. Seems it create quite an attraction for my snakeskin mozaics.