What is the primary concern regarding the consumption of bad fish?

The primary concern regarding the consumption of bad fish is the potential for foodborne illness. When fish is improperly stored, handled, or comes from contaminated waters, it can harbor harmful bacteria, viruses, or parasites that pose serious health risks. Consuming contaminated fish can lead to various foodborne illnesses, some of which can cause severe gastrointestinal distress, neurological issues, or even long-term health complications.

Foodborne illnesses caused by bad fish can come from pathogens like Salmonella, Vibrio, or parasites such as Anisakis. These illnesses are especially concerning because they can affect individuals differently based on their age, health status, and immune system function, leading to potentially life-threatening situations.

While texture changes, loss of flavor, and increased cost may be concerns associated with bad fish, they do not carry the same level of immediate health risk as potential foodborne illness. The priority is always to ensure food safety and prevent illness, making the risk of foodborne pathogens the foremost concern when it comes to consuming fish that may be spoiled or contaminated.