Icebergs are the only freshwater part of an ocean. When icebergs melt, it results in a decrease in the salinity of ocean water.
The Gulf of Mexico
The fresh water part .... Goldfish apparently come from Asia, however they don't live in the ocean because goldfish are fresh water fish.
Rivers
False, ocean water makes up 93% of the hydrosphere. Fresh water makes up 7% of the hydrosphere. The hydrosphere takes up 75% percent of the earth's surface.
Yes. All rivers are fresh water, but those that have Estuaries are then changed from Fresh to Tidal where the Sea has influence, but this is only restricted to the part of the estuary that is tidal. In rivers that are affected by modern Industries, Fresh may not be the appearance of the water, due to Pollution, which I suspect the Question alludes to, but the water, if it isn't salty, is essentially described as 'Fresh'.
Inland ponds (ie, not near the ocean) are normally fresh water, and are formed either by precipitation (rain, snow, etc.) or by underground, or artesian water sources. Large ponds of this type are often called kettle lakes, in that they have no visible source of water supplying them, such as a river or stream. Ponds can also be formed by receding ocean tides and, in this case, will contain salt water. Of course, when the tide rises again, the pond will simply become part of the ocean, so these ponds are not permanent but exist only when the tide is out.
Ocean water has about 32 parts salt per 1000 parts water, while fresh water generally has 1 part salt to 10,000 parts water.
For the most part it does. There is some salt (brine) that is caught in the water when it freezes, but as the ice ages the brine will drain out.
Yes. The Bullshark can live in fresh and salt water
Only a small part of oceans volume is evaporated.
Seas are large bodies of water smaller than an ocean. They may be inland bodies of salt or fresh water, or a part of an ocean.
Neon tetras live in fresh water, not salt. So they probably live in areas of the Amazon River.