Blue-lined Rabbitfish

The Blue-lined Rabbitfish is a beautifully marked species distinguished by its network of wavy blue lines running horizontally across a bright yellow to golden body. The blue markings create an intricate maze-like pattern that makes this one of the most attractive rabbitfish species available in the marine aquarium trade. A dark vertical bar runs through the eye and another behind the head, adding further visual interest to this eye-catching fish.

In the wild, the Blue-lined Rabbitfish inhabits coral reefs and lagoons across the western Pacific, where it is typically found in pairs or small groups grazing on algae. Like all members of the Siganidae family, it possesses venomous dorsal and anal spines that can deliver a painful sting. Despite this defensive weaponry, the species is inherently peaceful and makes an excellent community fish that gets along with virtually all tankmates.

The Blue-lined Rabbitfish is an outstanding algae grazer and one of the most effective biological controls for nuisance algae in reef aquariums. It will eagerly consume hair algae, bryopsis, and other problematic algae species that many other herbivores refuse. Hardy, disease-resistant, and readily accepting prepared foods, this species is an excellent choice for beginners with tanks of 125 gallons or larger. It is considered reef-safe, though underfed specimens may occasionally sample soft coral polyps.