Option 1: If a healthy freshwater fish is placed in salt water, the expected consequence is that the fish becomes dehydrated and dies. Freshwater fish are adapted to live in water with a lower salt concentration than their body fluids. When placed in saltwater, water will move out of the fish`s body through osmosis in an attempt to balance the salt concentration. This leads to dehydration and can eventually lead to death.

Option 2: The fish becoming bloated and dying is not the expected consequence of placing a healthy freshwater fish in salt water. Bloating is usually caused by issues with digestion or swim bladder disorders, which are unrelated to saltwater exposure.

Option 3: While it is possible for a fish placed in salt water to suffer from fungal or bacterial diseases, this is not the expected consequence. The primary consequence is dehydration, as explained in option 1.

Option 4: The correct answer is option 1. There will be a significant effect on the fish when placed in salt water, and it is unlikely for the fish to survive.