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FishintermediateSaltwater

Longnose Butterflyfish

Forcipiger flavissimus

AnimaliaChordataActinopterygiiPerciformesChaetodontidae

📍 Indo-Pacific & Eastern Pacific

Ask Finn

Vivid yellow butterfly with a comically long, forceps-like snout for extracting prey from coral branches. Hardier than most butterflyfish and more willing to accept prepared foods. Does best with abundant live rock.

Size8.5"
Min Tank75g
peaceful
Zonemid

Care Guide

Diet

Longnose butterflyfish are carnivorous and primarily feed on small invertebrates, particularly zooplankton and small crustaceans found in coral branches. Offer high-quality frozen foods like mysis shrimp, brine shrimp, and copepods once daily. They are more adaptable than most butterflyfish and will gradually accept quality flake foods and small pellets, though live or frozen foods should remain the dietary staple.

Behavior

This species is generally peaceful and non-aggressive toward other fish, though they may nip at small crustaceans and zooplankton-eating organisms. They are active mid-water swimmers that spend much of their time foraging among live rock and coral branches using their distinctive elongated snout. They are typically solitary or found in pairs in the wild and do best when kept individually or as established pairs.

Breeding

Breeding Longnose butterflyfish in captivity is extremely rare and has not been reliably documented in home aquariums. They are pelagic spawners that require very large systems with specific environmental triggers and larval rearing capabilities. Hobbyists should not expect to breed this species and should source captive-bred or wild-caught specimens from reputable suppliers.

Common Diseases

Marine Ich (White Spot Disease)

Symptoms

White spots on body and fins, rapid breathing, flashing against rocks, lethargy

Treatment

Increase water temperature to 26-27°C, maintain excellent water quality, use copper-free treatments or hyposalinity therapy; quarantine affected fish

Fin Rot

Symptoms

Frayed or deteriorating fin edges, discoloration at fin margins, progressive fin loss

Treatment

Improve water quality and reduce stress; perform frequent water changes; use antibiotic treatments if bacterial infection is confirmed

Lateral Line Erosion (HLLE)

Symptoms

Pitting or erosion along lateral line and head, loss of sensory pores

Treatment

Improve diet with high-quality foods rich in vitamins and HUFA; enhance water quality; supplement with vitamin-enriched foods

Parasitic Infections

Symptoms

Excessive scratching, visible parasites, clamped fins, loss of appetite

Treatment

Quarantine fish; use copper treatments or formalin dips as appropriate; maintain pristine water conditions; consider UV sterilization

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Quick Facts

pH
8.1–8.4
diet
carnivore/invertebrates
maxSize
8.5 inches
salinity
SG 1.020–1.025
minTankSize
75 gallons
temperature
73–81°F (23–27°C)

Temperature

73–81°F

23–27°C

Stats

Community tips0
Kept by0 hobbyists