Usually describes a business or venture that ends in failure, particularly financial.

Financial Ruin

Not always literal, often used to express the end of something.

Metaphorical Use

It's informal and best used in casual conversations or writing.

Directly refers to the actual death of aquatic creatures, often fish.

Evokes a clear image of a dead fish floating in water; vivid description.

Rarely used for human death; mainly for animals, particularly those living in water.