A fish died in my aquarium. She sacrificed herself for me? Is my home under sha qi attack? Should I replace a dead fish with a new one so that another fish will sacrifice itself for me?
The fish did not sacrifice itself for you. She died because the environment was not suitable. Find the cause and make the necessary corrections.
We set up a fish tank because we need the water element to activate financial luck. We do not use fish to "absorb" sha qi so that they die for us.