Canned fish: The reason why "sardines" and "mackerel" have become the timeless heroes of the canned fish industry is not by chance, but a perfect combination of economics, food science, and the flavor profile that consumers recognize.
A deep dive into why these two fish dominate the market while others are less popular.
The main reasons producers worldwide choose these two fish groups are as follows.
Appropriate fat content (Oily Fish): Both are high-fat fish; when subjected to high heat during sterilization, their flesh does not become tough or dry but remains tender and juicy.
Bone structure: Both fish have small, uniform bones that soften completely under the high heat and pressure inside the can, making them edible. This adds calcium and is convenient for consumers.
Ideal size: The body size of the sardines and mackerel species used for canning typically fits standard can dimensions perfectly, enabling attractive and space-efficient packaging.
Natural abundance: Historically, both species were plentiful in the oceans, keeping raw material costs lower than those of larger predatory fish.
Other fish species are also canned but tend to be niche or have certain limitations.
Tuna is the number one competitor but is usually categorized separately because its flesh forms solid chunks and it is more expensive.
Salmon: Also canned, mostly in North America, but its higher price and tendency to flake more than fresh salmon limit its appeal.
Anchovies: Typically salted and fermented rather than canned in tomato sauce, they are very salty and used more as seasoning than a main dish.
Nile tilapia or freshwater fish: Trials have been made, but drawbacks include a "muddy" smell and more complex, tougher bone structures compared to marine fish, making it harder to soften the bones during processing.
Canned fish: Reasons why fish such as snapper, grouper, or other white fish are rarely canned in tomato sauce include:
Heat sensitivity: White fish have low fat; when exposed to high heat in retort processing, their flesh breaks apart into small pieces and loses shape, making them less visually appealing.
Market value: Some fish command higher prices when sold fresh, so canning reduces their product value.
Consumer familiarity: The rich tomato sauce flavor is designed to mask strong fishy odors and enhance the taste of high-fat fish most effectively.