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Small Unicornfish (Naso minor)

Find Small Unicornfish across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Small Unicornfish
Photo: Rezki Idhil Kharisma · CC BY-SA 4.0
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Where to buy Small Unicornfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Small Unicornfish

Small Unicornfish have a pale silvery-gray body with subtle yellow or olive tones, and a distinctive small horn-like rostral protrusion on the forehead (more prominent in males). The body is moderately compressed and streamlined for reef navigation.

Key facts

Reef safety
Reef Safe
Family
Acanthuridae
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Diet
omnivore
Diet Details
Marine algae, krill, small fish, shrimp, mysid shrimp
Max Size
20
Origin
Indo-Pacific region from East Africa and the Red Sea to Hawaii and French Polynesia, typically found on coral reef slopes and drop-offs.
Feeding Schedule
Feed 2-3 times daily
Care Requirements
• Minimum 180-gallon aquarium; larger for adults • Temp 72–78°F, pH 8.1–8.3, SG 1.023–1.025 • Moderate water flow; open swimming space essential • Feed varied diet: nori, spirulina, mysis, quality pellets • Peaceful but may nip at corals; monitor compatibility
Common Health Issues
Marine ich, Fin rot, Swim bladder disorder, Hole-in-the-head disease, Columnaris disease
Care Level
Moderate
Appearance
Small Unicornfish have a pale silvery-gray body with subtle yellow or olive tones, and a distinctive small horn-like rostral protrusion on the forehead (more prominent in males). The body is moderately compressed and streamlined for reef navigation.

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.

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