Want this question answered?
they will die
No. If the water doesn't overflow, then the addition of the fish will increase the total weight of the tank and its contents by 50 pounds.
That depends on the weight of the fish as compared to the weight of the water their bodies displace. If it's a heavy, dense fish, then the tank with the fish would weigh more. If it's a light, less dense fish, then the tank with water only would weigh more. This assumes that the water displaced has been removed from the tank, right? If you are adding the fish to the water then I think it should increase the weight regardless of the density of your fish. The question then might be, does the fish weigh less when it is swimming than it would on a dry scale?
Then your filter is not on.
in a tank or the ocean?
In my research when there are more Panda Corys in a tank the activity of the fish is increased. The fish will move in groups when there are multiple fish. The one alone has the average speed extrmely less then the tank with two fish and the tank with three fish.
Salt Water Fish
assuming you have any fish left, test your water. do a 50% water change immediately. change your filter, it means there is something definitely wrong with your tank what are the details of your tank, size capacity, how many fish etcc
I HAVENT AND MY FISH ARE STILL ALIVE (THE REMAINING ONES I MEAN)
Assuming the dirty fish tank has had fish and water in it, without doing various specialised water tests it is impossible to tell what is in it.
It dies
It might be unsafe to drink because fish food, fish scales, fish waste, and many different kinds of bacteria are in fish tank water.