Where to buy Oneknife Unicornfish
ReefDock searches the following reef retailers for this fish. Click through to see the live price.
- Search Saltwaterfish
Saltwaterfish
Search this retailer
- Search Amazon
Amazon
Search this retailer
- Search Petco
Petco
Search this retailer
About Oneknife Unicornfish
A large, elongated tang with a silvery-gray body and a distinctive knife-like compressed shape. Characterized by a prominent frontal protuberance (horn or knob) on the forehead, particularly pronounced in males, and subtle bluish or greenish iridescence on the gill covers.
Key facts
- Difficulty Level
- Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
- Diet Details
- Naturally feeds on benthic algae and small invertebrates. In captivity, offer large daily feedings of high-quality herbivorous pellets, dried seaweed (nori), and regular meaty foods including small pieces of fish, shrimp, and occasional live copepods. Supplement with vitamin-enriched preparations.
- Reef safety
- Not Reef Safe
- Care Level
- Expert
- Diet
- omnivore
- Temperament
- Semi Aggressive
- Care Requirements
- • Large tank minimum 250 gallons; prefers 250+ for sustained health • Stable water: pH 8.1–8.3, SG 1.020–1.025, temp 72–78°F • Strong water flow and excellent filtration essential • Varied diet: high-quality pellets, frozen meaty foods, nori sheets • May nip at corals and smaller fish; best in species-specific or large FOWLR setup
- Common Health Issues
- Marine Ich, Fin Rot, Swim Bladder Disorder, Bacterial Infections, Fungal Diseases
- Origin
- Indo-Pacific from Indonesia and Philippines eastward through Micronesia and Polynesia.
- Appearance
- A large, elongated tang with a silvery-gray body and a distinctive knife-like compressed shape. Characterized by a prominent frontal protuberance (horn or knob) on the forehead, particularly pronounced in males, and subtle bluish or greenish iridescence on the gill covers.
- Feeding Schedule
- 2-3 times daily
- Max Size
- 28
Looking for a hobbyist seller?
ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.
Verify the source tank before you buy
ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.