That Smells Fishy, or What Makes Fish Smelly

I am all for healthy food and eating fish is part of my healthy eating routine.

However, like many other people, not infrequently do I get kind of disgusted by its odor.

How come? One of the best foods on the earth for a healthy way of living and this?

So I am wondering how science explains its sometimes nose-breaking smell. Let's find out.

That Fishy Odor

Fish can be smelly due to the presence of certain chemical compounds in their flesh, particularly amines such as trimethylamine (TMA), which is often referred to as "fishy odor." These amines are produced by bacteria present on the surface of the fish or within its body, as well as by enzymes that break down amino acids in the fish's flesh.

When fish begins to spoil or decompose, these bacteria and enzymes break down the fish's proteins into smaller compounds, including TMA, which gives off a strong, unpleasant odor. This process is accelerated by warm temperatures, which is why fish left out at room temperature can quickly develop a strong odor.

Fresh of the...

The freshness of the fish, as well as how it is stored and handled, can also affect its smell. For example, if fish is not properly cleaned or if its intestines are not removed, it can quickly develop an unpleasant smell. Similarly, if fish is not stored at the proper temperature or if it is left sitting out for too long, it can begin to spoil and develop an unpleasant odor.

Wait a Minute... How about Live Fish?

Live fish typically do not have a strong odor unless they are stressed or diseased. When fish are stressed, they can release chemicals called catecholamines, which can break down into amines such as TMA, causing a fishy smell. In addition, if fish are kept in crowded or dirty conditions, they may produce more waste and ammonia, which can contribute to an unpleasant odor.

Certain species of fish, such as carp and catfish, are known to have a stronger natural odor than other species, even when they are alive. This is due to the presence of certain chemicals in their skin and mucus, which can have a musky or earthy smell.

Smelly Yummy

It's also important to note that different cultures may have different opinions on what smells "fishy" or unpleasant, and what is considered a delicacy in one culture may be considered off-putting in another.

(The image source is https://www.pexels.com/photo/fish-catch-2792153/)