eli5 why are sardine bones edible while most other fish bones can harm you if you eat them?

Question

eli5 why are sardine bones edible while most other fish bones can harm you if you eat them?

In: Biology

Answer 1

For whatever reason all I can think about is the Coles brand tinned salmon I see at work, and I guess they’re legally required to have a warning that it includes bones or something because on the back of the can it has a big warning section that’s phrased like “WARNING: Coles brand tinned salmon with soft edible bones is a great source of dietary calcium.” Like, technically, warning given but dammit if we can stop ourselves from advertising ourselves