Sardines naturally grow in tins. The way the lid cuts you is part of their natural defence mechanism. Oysters aren't fish, but live in the sea, and taste a bit like swallowing your own phlegm. If every fish in the world was called Eric, there'd be no way to tell them apart. We don't understand fish language, so they might actually all be called Eric, for all we know.
Some people think fish are a higher intelligence.
These people are known as morons. If a black fish walks in front of you at night, it has evolved considerably. The French word for fish is poisson. Smearing a fish over your body will make you smell like a fish. The smell of a fish is nothing like the smell of Poison perfume, even if it is spelt almost the same as poisson.