Fistularia commersonii is a MIS of the family Fistulariidae and shows great abundances in the Greek seas. It is a fish-eating species with more than 70% of its diet consisting of native fish species of high economic value (S. smaris, B. boops and mullid spp.). At the same time, it feeds on ecologically important species, such as gobies. The species has spread throughout the Mediterranean Sea and does not appear to have natural enemies, although further research is needed. In addition, key aspects of its biology as well as its ecological requirements remain virtually unknown, as relevant research is very limited.

It is widespread in the tropical and subtropical waters of the Indo-Pacific as far as Japan and east to the west coast of the Americas, including the Red Sea. Like other Lessepsian migrants, it is said to have entered the Mediterranean Sea in 2000 and has since continued to spread, becoming a well-established species in several areas.

Its length reaches 1.6 m, but the average is about 1 meter. His body has an unusually long, slender shape. It has a tubular snout, large eyes and a long thread along the tail with sensory pores that may help detect prey. Its body is greenish-gray to brown with two thin blue stripes or dotted lines.