Coral Pigfish

Interesting Info

• The Coral Pigfish occurs in Australia from the Houtman Abrolhos to Rob Roy Reef in Western Australia (including Rowley Shoals and Scott Reef), at Ashmore Reef in the Timor Sea, and from the northern Great Barrier Reef (Queensland) south to Montague Island (New South Wales); it is also recorded at Lord Howe Island.
• Globally, it is widespread across the tropical Indo-West Pacific, from the Red Sea and East Africa to southern Japan and French Polynesia.
• Adult males are reddish-brown on the front half of the body and white towards the tail, with large black spots at the base of the pectoral fin and on the rear dorsal and anal fins.
• Females and juveniles are dark brown to black with bold white spots along the upper and lower sides, a pattern that helps them hide in ledges and caves.
• A quick ID tip is the “axil spot”, a big black dot right where the pectoral fin meets the body (the fish’s “armpit”).
• Juveniles act as cleaner fish, picking parasites from larger reef species before shifting to a diet of hard-shelled invertebrates as they grow.
• It feeds mainly on molluscs and crustaceans, using strong jaws to crush shells found on sand, rubble and under ledges.
• This wrasse is diurnal, meaning it forages by day and shelters in caves or under coral ledges at night.
• The Coral Pigfish is a protogynous hermaphrodite—individuals begin life as females and some later change to males.
• Spawning likely occurs in pairs or small groups in the water column, with eggs drifting in currents until hatching.
• Lifespan is not well documented for this species, but like many small wrasses it probably lives several years in the wild.
• Predators include larger reef fishes such as groupers and snappers; juveniles reduce risk by cleaning near shelter and darting into crevices.
• Ecologically, it helps control small invertebrate populations and, as a juvenile cleaner, reduces parasite loads on larger fishes.