There could be many reasons for this - 1) The water is dirty 2) The chlorine / PH levels may be too high 3) Water temp may be too low, they tend to get seriously drowsy when cold 4) Over eating 5) Under eating 6) Lack of some sort of vitimin, i.e add beef heart, earth worms, blood worms, small gold fish to diet
500,000
Swimming or football
They may exist, but it is not likely. That is because a 100m swimming pool would be too inefficient. It would be to large and would require too much space, water, and chemicals.
A million gallons is really a lot; I would say, an extra-large swimming pool could be large enough.
A 75 gallon tank is not large enough to house an Oscar in the long term, however if the situation is temporary a mid to large sized canister filter or very large hang on the back filter would be nessesary. I recommend an Eheim 2217 or Aquaclear 110.
I would assume so seeing as water conducts electricity. That's why at local pools lifeguards tell you to get out of the pool if it even looks like there's about to be a storm.
no.
the strings
A swimming pool would generally hold more, but that is not always the case. Some jacuzzis and other types of tubs are pretty large and there are the little toy pools you can set up in the yard.
The largest would be about the size of an Olympic swimming pool but we only fly that on special occasions.
An Oscar can quickly grow to 14" and more given good conditions and good food. I would only consider another Oscar of similar size but at the same time I would be considering getting a larger tank. I have seen large 8'x2'x2' aquaria with large Red Devils and 10"Frontosa mixed in with 10"Oscars but since these fish species require totally different water conditions to flourish it is not something I would either do or recommend. HTH
The clothing you would wear while swimming is the definition of swimming out.