What type of fly is also known as the blue or green-bottle fly?

The blue or green-bottle fly is commonly referred to as a blow fly. These flies are known for their metallic coloration, which gives them their distinctive appearance. Blow flies are often among the first to arrive at decomposing substances, including carrion, due to their ability to detect and locate odor from significant distances.

This characteristic is crucial in forensic entomology, where blow flies are used to estimate the time of death in various investigations. Their life cycle is also well-studied, making them important in understanding ecological processes.

In contrast, the other types of flies listed do not share the same characteristics or roles. The house fly is more of a pest and is not specifically noted for its coloration or behavior in relation to decomposing matter. Fruit flies are primarily associated with fermented substances and produce, while flesh flies are typically recognized by their different reproductive behaviors and are not specifically known as blue or green. Each of these flies has distinct ecological roles, but the blow fly is uniquely identified as the blue or green-bottle fly.