Because of more negativity in your house, the fishes are dying.
Tips: keep rock salt in a bowl or cup at the four corners of your house and replace it or flush in the ezter every week.
Upto certain it will remove the negative forces.
Also check your house and try to correct.
Energy imbalanced noticed in your house.
S. Rajahgopaal
Vaasthu & cosmic divine energy consultant
98402 49266
Website- vasthurajah.com