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FishintermediateSaltwater

Naso Tang

Naso lituratus

AnimaliaChordataActinopterygiiAcanthuridae

📍 Indo-Pacific — Red Sea to Hawaii

Ask Finn

Elegant tang with a characteristic orange-tipped rostrum, blue-trimmed fins, and long tail streamers in mature males. A graceful, active swimmer that needs a large tank. Excellent algae control.

Size18"
Min Tank150g
semi-aggressive
Zoneall

Care Guide

Diet

Naso tangs are primarily herbivorous and require a diet rich in marine algae and vegetable matter. Offer nori (dried seaweed), spirulina flakes, and high-quality herbivore pellets daily, supplemented 2-3 times weekly with frozen mysis shrimp or other meaty foods. Feed small portions multiple times daily to mimic natural grazing behavior.

Behavior

Naso tangs are active, graceful swimmers that require ample open water for cruising and displaying their characteristic flowing tail streamers (in mature males). They are semi-aggressive and may chase smaller or slower-moving fish, particularly other tangs, but are generally peaceful toward larger, faster species. They are excellent algae controllers and spend much of their time grazing on surfaces.

Breeding

Breeding Naso tangs in captivity is extremely rare and has not been reliably documented in home aquariums. They require very large systems, specific environmental triggers, and larval rearing capabilities that are beyond typical hobbyist setups. Captive-bred specimens are virtually unavailable; wild-caught fish dominate the trade.

Common Diseases

Marine Ich (Cryptocaryon irritans)

Symptoms

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

Treatment

Increase water temperature to 28-29°C, maintain excellent water quality, consider copper-based treatments or hyposalinity therapy; quarantine infected 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 partial water changes; use antibiotic treatments if bacterial infection is confirmed

Velvet Disease (Amyloodinium ocellatum)

Symptoms

Fine golden or rust-colored dust on body, rapid breathing, scratching behavior, loss of appetite

Treatment

Raise temperature to 28-29°C, maintain high oxygen levels, use copper treatments or hyposalinity; quarantine immediately to prevent spread

Head and Lateral Line Erosion (HLLE)

Symptoms

Pitting or erosion of head and lateral line, loss of sensory pores, progressive tissue damage

Treatment

Improve diet quality with varied foods rich in vitamins and fatty acids; enhance water quality; supplement with vitamin-enriched foods

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Quick Facts

pH
8.1–8.4
diet
herbivore — nori, algae, mysis
maxSize
18 inches
minTankSize
100 gallons
temperature
75–82°F (24–28°C)

Temperature

75–82°F

24–28°C

Stats

Community tips0
Kept by0 hobbyists