🐠 Watanabei Angelfish (Genicanthus watanabei)
An Iridescent Pale Blue Body With Striking Differences Between Males and Females • The Smallest Genicanthus Species • One of the Few Truly Reef-Safe Angelfish
 
📋 The Watanabei Angelfish, also known as Watanabe's Angelfish or the Blackedged Angelfish, displays striking sexual dimorphism: males show an iridescent pale blue body with several dark horizontal stripes across the lower half and a single orange stripe extending toward the tail, while females are a cleaner iridescent pale blue with dark blotching on the face and dark outlines on the fins, but no body stripes.
It comes from a wide range across the Pacific Ocean, from Taiwan and the Ryukyu Islands to the Tuamotu Islands, New Caledonia, and the Austral Islands, the smallest member of the Genicanthus genus, collected from meaningfully deep, current-swept outer reef slopes, typically 21 to 80 metres. Every Watanabei Angelfish we ship is feeding well, and we acclimate it gently and gradually, reflecting its deep-water origin.
This is one of the true reef-safe angelfish; unlike most angelfish, Genicanthus species are planktivores rather than coral or sponge nippers, making coral nipping rare rather than a real risk. Given its deep-water origin, it does best under dim, subdued lighting. It's also more sociable than most angelfish and does best kept as a mated pair or a male with a harem of females, introduced to the tank together. It reaches up to 15cm, so plan on at least 470L.
 
💡 Highlights
💙🧡 Dramatic Sexual Dimorphism: Males and females look strikingly different
📏 The Smallest Genicanthus Species: A more manageable size than its relatives
🌿 Reef Safe: A true planktivore, one of the few safe angelfish genera
🌗 Prefers Subdued Lighting: Reflects its natural deep-water origin
👫 Sociable: Does well as a pair or harem, unlike most angelfish