Leptoichthys fistularius

Leptoichthys fistularius, the brush-tailed pipefish, is a species of pipefish found in shallow to intermediate depths off the coast of southern Australia, usually in seagrass beds. This species is the largest known species of pipefish, growing to a maximum of 63 cm (25 in) in length. Like other pipefishes, the male carries the fertilized eggs in a pouch under his tail until they hatch. The genus name comes from the Greek leptos meaning "thin" and ichthys meaning "fish".