Blue chromis

The Blue chromis (Chromis cyanea) is a small, vibrantly blue-colored fish native to the western Atlantic Ocean, including the Gulf of Mexico, the Caribbean Sea, and the northern coast of South America. This species features a slender body with a forked tail and typically grows up to 15 cm in length. While it's a popular sight among divers and snorkelers in its natural habitat due to its striking blue hue and schooling behavior, it is not considered a mainstream species in the aquarium hobby. Its recognition in the hobby is moderate, primarily among enthusiasts of marine tanks focused on recreating reef environments.