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Longnose Butterflyfish
Forcipiger flavissimus
Animalia›Chordata›Actinopterygii›Perciformes›Chaetodontidae
📍 Indo-Pacific & Eastern Pacific
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.
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.
Tank Mates
Similar peaceful temperament and compatible water parameters; both reef-safe
Beneficial symbiotic relationship; shrimp will clean parasites from fish
Peaceful invertebrate that occupies different niche; compatible with butterflyfish
Can be territorial but often compatible; monitor for aggression
Peaceful bottom-dweller with different feeding habits; good reef companion
Peaceful goby with similar reef-safe behavior and compatible water needs
Common Diseases
Marine Ich (White Spot Disease)
White spots on body and fins, rapid breathing, flashing against rocks, lethargy
Increase water temperature to 26-27°C, maintain excellent water quality, use copper-free treatments or hyposalinity therapy; quarantine affected fish
Fin Rot
Frayed or deteriorating fin edges, discoloration at fin margins, progressive fin loss
Improve water quality and reduce stress; perform frequent water changes; use antibiotic treatments if bacterial infection is confirmed
Lateral Line Erosion (HLLE)
Pitting or erosion along lateral line and head, loss of sensory pores
Improve diet with high-quality foods rich in vitamins and HUFA; enhance water quality; supplement with vitamin-enriched foods
Parasitic Infections
Excessive scratching, visible parasites, clamped fins, loss of appetite
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