Blue Tang

Environment

Reef aquarium of at least 600-800 liters minimum for an adult (reaches 25-30 cm). Requires very large open swimming space. Stable seawater: temperature 24-27°C, pH 8.1-8.4, salinity 1022-1025 (33-35 g/L), KH 7-12°dKH, calcium 400-450 mg/L. Décor with live rock providing hiding spots and algae for grazing. Lighting promoting algae growth. Moderate to strong water flow, excellent filtration and efficient protein skimmer. Very sensitive to nitrates (ideally < 20 mg/L). Mature aquarium essential (6 months minimum).

Feeding

Herbivore to omnivore with predominantly plant-based diet. Dietary base: marine algae (nori, spirulina), blanched vegetables (spinach, zucchini), frozen preparations based on algae. Supplement with occasional meaty foods (brine shrimp, mysis). Feed 2-3 times daily in small amounts. Constant grazing on algae from live rock is essential for digestive and immune health.

Tips & tankmates

Peaceful cohabitation, compatible with most non-aggressive reef fish. Can cohabit with other tangs if introduced simultaneously and in large volume. Beware of caudal blade (scalpel) during handling. Very sensitive to stress, diseases (Cryptocaryon, Amyloodinium) and poor water quality. Slow acclimation essential. Quarantine introduction highly recommended. DO NOT keep in small volumes: it is a tireless swimmer that suffers in confined spaces. Often sold as juveniles: anticipate the imposing adult size (25-30 cm). Avoid impulse buying related to animated movies.

Sources

• FishBase - Paracanthurus hepatus
• Reef2Reef - Blue Tang Care Guide
• LiveAquaria - Hepatus Tang
• Seriously Fish - Marine Species