Japanese Swallowtail Angelfish

Japanese Swallowtail Angelfish

Genicanthus semifasciatus

Also known as: Masked Angelfish, Japanese Angelfish

🧂 Saltwater ✌️ Peaceful 🟡 Moderate 🍽️ Omnivore Reef Safe

One of the few truly reef-safe angelfish. Males display bold black stripes on a white body with a lyretail, while females are solid yellow-orange. A prized deepwater species.

Tank Size

75 gal
minimum (125+ preferred)

Temperature

72–78°F
22–26°C

pH Range

8.1–8.4
water acidity

Max Size

8"
20.3 cm

Lifespan

10–15 years
typical in captivity

Swim Level

Middle
preferred zone

Care Notes

Prefers cooler water temperatures. Provide open swimming space and plenty of rockwork. Peaceful and won't bother corals or clams.

Feeding

Frozen mysis, enriched brine shrimp, spirulina, and quality marine pellets. Accepts food readily once settled.

Compatible Tank Mates

Blue Green Chromis 3" Pink Skunk Clownfish 3.5" Skunk Clownfish 4" Orange Skunk Clownfish 4.5" Lubbock's Fairy Wrasse 3" Melanurus Wrasse 5" Cleaner Wrasse 4" Yellow Coris Wrasse 5" Carpenter's Flasher Wrasse 3" Firefish Goby 3" Yellow Watchman Goby 4" Diamond Goby 6"

Use Caution With

Ocellaris Clownfish 3" True Percula Clownfish 3" Yellowtail Damselfish 2.5" Blue Tang 12" Yellow Tang 8" Kole Tang 7" Clarkii Clownfish 5" Tomato Clownfish 5" Scopas Tang 8" Naso Tang 18" Convict Tang 8" Azure Damselfish 2.5"

Incompatible With

Maroon Clownfish 6" Blue Devil Damselfish 3" Powder Blue Tang 9" Achilles Tang 10" Purple Tang 10" Three Stripe Damselfish 3" Domino Damselfish 5" Four Stripe Damselfish 3" Jewel Damselfish 6" Clown Tang 15" Green Clown Goby 1.5" Catalina Goby 2.5"

Check Compatibility

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