Popular Varieties
Reef-keeping favorites. Start exploring the catalog from a variety that catches your eye.
Euphyllia (Hammer / Torch)ユーフィリア系（ハンマー・トーチ）lpsBeginnerReef-dwelling corals with extended polyps. Hammer corals feature hammer-shaped tentacles, while torch corals display flame-like polyps. Both responsive to water flow and lighting, making them beginner-friendly for marine aquaria.
Palythoaパリジア（ボタンポリプ）BeginnerA Zoanthid relative with large button-like polyps growing densely. Hardy with rich colors.
Mushroom CoralディスクコーラルBeginnerMushroom-shaped soft coral in various colors. Hardy and prefers low light and gentle flow. Easy to propagate.
MontiporaモンティポラspsIntermediateSecond most popular SPS coral after Acropora. Diverse forms including plate and branching. Easier SPS entry point.
Hammer CoralハンマーコーラルlpsIntermediateLPS coral with T-shaped tentacles resembling hammers. Related to torch coral. Beautiful swaying movement in current.
Torch CoralトーチコーラルlpsIntermediateBeautiful LPS coral with long flowing tentacles resembling torches. Graceful movement in current. Somewhat sensitive to water quality.
Goniopora (Flowerpot Coral)ハナガササンゴ（ゴニオポラ）lpsIntermediateBeautiful LPS with long polyps like a bouquet. Once considered difficult to keep, but modern techniques have improved success.- Acroporaミドリイシ（アクロポラ）spsAdvancedThe pinnacle of coral keeping. Requires intense lighting and pristine water quality, but rewards with stunning growth and coloration.
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Articles for coral keeping
Beginner guides, keeping tips, water and equipment pointers, and more
Coral Specimen History and Lineage Management | How to Refine Your Discerning Eye through ReefBook-style Provenance Tracking
Systematically recording the provenance of each coral specimen to deepen your husbandry experience is not mere data collection—it is a training process that cultivates the keeper's "eye." Understanding when and where an individual was acquired, the point at which coloration began to develop, and the environmental conditions under which it displays optimal coloration—accumulating this historical information forms the foundation for understanding coral physiological response patterns...
Mixed-Coral Tank Layout Planning | Co-existence Examples for SPS, LPS, and Soft Corals
When culturing different types of corals in a single tank, understanding each group's ecological niche—including their position in the food chain, light requirements, and water flow needs—and realizing competition avoidance through placement is key to success...
Soft Coral Soft Rot Disease and Tissue Collapse | Slime Secretion Abnormalities, Infection Treatment and Prevention
Soft Rot Disease in soft corals is a fatal disease in which the flexible skeletal portions rapidly decompose due to bacterial infection. The disease's onset involves multiple environmental factors, with rapid water temperature fluctuations (±3°C or greater), nutrient excess, water quality deterioration, and physical stress to the specimen serving as primary triggering factors.