Scrawled Filefish

The Aluterus scriptus, commonly known as the scrawled filefish, is a marine species found in warm waters around the globe, including the Atlantic, 🇮🇳 Indian, and 🌊 Pacific Oceans. Affectionately referred to as the scribbled or broomtail filefish, these unique creatures belong to the Monacanthidae family and are often associated with coral reefs and lagoons. They typically inhabit depths ranging from 3 to 20 meters (10 to 66 feet), although they have been found as deep as 120 meters (394 feet).

Reaching a maximum length of 110 cm (3.6 feet) and a weight of up to 2.5 kg (5.5 pounds), the scrawled filefish is notable for its elongated, oval-shaped, and strongly compressed body. Its coloration can vary from olive brown to gray, with irregular blue lines and spots, while black spots are dispersed mainly on the head. Juveniles may display a yellowish-brown hue with dark spots. The species is capable of rapid color changes to blend into its surroundings, akin to the adaptive abilities of an octopus.

The scrawled filefish's anatomical features include a small mouth at the tip of a pointed snout, two dorsal spines (one prominent and one smaller for locking), and a rounded, fan-like caudal fin. These fish are lacking in pelvic fins, which is a distinguishing characteristic of their order, Tetraodontiformes.

In terms of diet, the scrawled filefish is an omnivore with diverse tastes. It feeds on small crustaceans, various types of algae, gorgonians, sea anemones, tunicates, corals, seagrasses, and hydrozoans. The juveniles are known to travel great distances in the open ocean, often hitching a ride on floating seaweed.

These fish are generally solitary and demersal, meaning they dwell near the ocean floor, and are predominantly active during the day. They are shy around humans and rarely seen in schools. The name "Aluterus" is derived from Greek, translating to "not free or detached," a nod to their anatomical structure where the pelvis does not form a spiny projection as seen in some related species like triggerfish.