👉 Synenoids are a class of bacteria that primarily colonize invertebrates, including insects, crustaceans, and some types of fish. They have an internal tube called a synenoid body, which is filled with microorganisms and can be found in various parts of the host organism. This unique structure allows them to efficiently grow and multiply within their host's cells without direct contact. Synenoids are crucial for the survival and reproduction of these bacteria, as they provide the necessary nutrients needed