Johnrandallia nigrirostris, commonly known as the blacknosed butterflyfish, is a visually stunning species prized by marine aquarium enthusiasts. This large butterflyfish displays unique colouration and patterns that add elegance to any mature marine setup.
Care Level: Moderate to advanced. This species requires stable water parameters and a well-maintained environment.
Temperament: Generally peaceful but may show territorial behaviour towards similar species. Best kept singly or as part of a mixed community with non-aggressive tankmates.
Diet: Omnivorous. Feed a varied diet including high-quality marine flakes, frozen mysis shrimp, brine shrimp, and specialised herbivore preparations to ensure nutritional balance.
Minimum Tank Size: 180 litres (approximately 50 gallons) or larger to provide ample swimming space and reduce territorial stress.
Reef Compatibility: With Caution. While not inherently harmful to corals, this species may nip at sessile invertebrates or delicate coral polyps. Monitor behaviour closely in reef setups.
Lighting and Water Flow: Standard marine aquarium lighting and moderate water flow are suitable. Avoid strong currents that may stress the fish.
Placement: Provide plenty of live rock for grazing and hiding spots. This encourages natural behaviour and reduces stress.
Origin: Not Provided.
Maximum Size: Up to 20 cm (approximately 8 inches) in length.
FAQs
Q: Is Johnrandallia nigrirostris reef safe?
A: It is generally safe with caution; it may nip at corals or invertebrates, so careful monitoring is advised.
Q: What should I feed this butterflyfish?
A: A varied diet including marine flakes, frozen mysis, brine shrimp, and algae-based foods is recommended.
Q: Can it be kept with other butterflyfish?
A: It can be territorial; avoid housing with similar species to reduce aggression.



Reviews
There are no reviews yet.