Fish is the usual plural for one species. Fishes is used when you mean multiple species, especially in science and nature writing.

Both burned and burnt are correct in English. Burned is common as the past tense, while burnt often appears as an adjective before a noun.

The symbol & was once taught as a letter after Z. Learn where the word ampersand comes from and how the symbol is used today.

Passive voice can improve clarity when the actor is unknown or unimportant, or when you want to emphasize the result. See examples and tips.