Yellowfin Surgeonfish – Profile | Facts | Care | Habitat | Diet

Yellowfin Surgeonfish
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The yellowfin surgeonfish or Cuvier’s surgeonfish, scientific name Acanthurus xanthopterus is one in all a number of marine fish that change coloration as they become old. This attribute confused fish identification and initially put the younger and adults in numerous species. With the arrival of aquaria and later, coral reef aquaculture, specialists observed the color transformation. Only lately have zoologists begun to grasp their metamorphosis.

Yellowfin Surgeonfish profile

The yellowfin surgeonfish is a wonderful fish that steadily adjustments color because it matures. This color change is so intense, that juveniles and adults have been, till lately, labeled as totally different species.

The grownup yellowfin surgeon is purple-grey in color with a yellow patch behind every eye and fins that grade from purple, by way of yellow to clear. It has small caudal spines.

The juvenile has proportionately longer dorsal and anal fins, in addition to vivid blue scribbled stripes throughout its flanks and fins.

The yellowfin surgeon is a scavenger that sifts by way of sand and gravel within the sandy outer areas of reefs. It feeds on meals and waste left behind by different fish species.

This fish doesn’t select a mate. Instead, on full moon nights throughout heat seasons, the males will tackle totally different colorations and attract females to giant spawning teams.

The yellowfin surgeon is widespread all through the coral reefs of the Indo-Pacific, extending alongside the east African coast to South Africa. It usually prefers sheltered bays and lagoons to open ocean.

Its IUCN standing Least Concern, and its population are thought to be secure.

Yellowfin Surgeonfish Description

Also often known as Curvier’s Surgeonfish, Doctorfish, Lancetfish, Purple Surgeonfish, Ringtail Surgeonfish, Ring-tailed Surgeonfish, Thorntail, Thorntail Fish, Yellowfin Surgeon, Yellowmask Surgeonfish.

The yellowfin surgeonfish ranges in size to 70 cm (28 in). It has eight or 9 dorsal spines, 25-27 dorsal tender rays, three anal spines, 23-25 anal tender rays, and 16-24 anterior and 17-22 posterior gill rakers.

Its body is purplish-grey. It has an area of lifeless yellow in front of its eye. The outer third of its pectoral fin is yellow, the intense distal half is hyaline. Its dorsal and anal fins are yellowish-gray basally and uninteresting yellow distally. Its caudal fin is purplish and the caudal backbone is small.

Just about the whole lot to do with the Yellowfin Surgeonfish is intensive and large. They are the most important of the Acanthurus genus, reaching as much as over 27 inches.

They are discovered over the most important geographic space of the globe and at a few of the biggest depths, having reportedly been noticed by submarines at 295 ft (90 meters) deep.

Their weight loss plan consists of concerning the widest number of meals for the surgeonfish, and they’re stated to be one of many few that can take bait from a fisherman. They are able to huge adjustments in coloration patterns and so they develop in a short time.

Not a lot is understood of their persona as they don’t seem to be usually stored in captivity, however, as with different Acanthurus the Yellowfin Surgeonfish might be not overly aggressive, besides towards its personal genus. It can also battle with different surgeonfish or tangs, particularly new additions to their aquarium.

It may be stored in a fish solely tank as long as there are loads of swimming room and a few rocks/ corals with nooks and crannies to cover in. Surgeonfish like water turbulence, juveniles particularly, and they don’t seem to be too choosy about meals as soon as settled.

Like with most surgeonfish, this may be achieved by initially providing macroalgae.

A voracious algae eater, the Yellowfin Surgeonfish maybe even be stored in reef surroundings. They are one of many Acanthurus species with a gizzard-like abdomen, which lends itself to consuming habits much like these of the Ctenochaetus species, such because the Yellow-eyed or Kole Tang. They will sift or ‘suck’ the sand ingesting detritus, algae, items of fish, and every other food that presents itself.

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Yellowfin Surgeonfish Range and habitat

It lives close to coral reefs at depths starting from 5–90 m (16–295 ft). Its preferred temperatures are 24–28 °C (75–82 °F) at latitudes of 30°N to 30°S.

It ranges from East Africa to the Hawaiian Islands and French Polynesia, north to southern Japan, south to the Great Barrier Reef, and New Caledonia, and within the Eastern Pacific, from the decrease Gulf of California and Clipperton Island to Panama and the Galapagos Islands.

Juveniles inhabit shallow, protected, turbid inshore waters, whereas adults desire deeper areas of protected bays and lagoons.


It feeds on diatoms, detritus movie of sand, filamentous algae, hydroids, and items of fish. It might be the one surgeonfish that readily takes the bait. Learn more about common carp facts.

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