Korálovník Velký

Overview

Discosoma nummiforme is a species of corallimorpharian, a group of cnidarians that resemble sea anemones but lack a skeleton. Often referred to as a beaded corallimorph or variable plate anemone, this species is widely distributed across the Indo-Pacific and Red Sea regions. It is a popular subject in marine aquaria due to its diverse color forms and relative ease of care.

Distribution & habitat

This species is found throughout the Indo-Pacific, including the Red Sea and French Polynesia. It typically inhabits subtidal zones, often clustering on shaded rocks, under ledges, or on lagoon pinnacles and seaward reefs. It attaches to hard substrates like coral rubble using an adhesive pedal disc.

Appearance

Characterized by a broad, flat, and sometimes pentagonal-shaped oral disc, this corallimorph lacks prominent marginal tentacles. The surface of the disc often features small, wart-like or spheroidal tentacles arranged in radial patterns. Coloration is highly variable, ranging from shades of brown and orange to vibrant emerald-green or purple-brown. When exposed to air, the animal can contract its oral disc into its body column.

Biology & behavior

Discosoma nummiforme is a colonial species that forms clusters through both sexual and asexual reproduction. It is a non-scleractinian anthozoan that competes with corals for space on the reef. The species relies on a symbiotic relationship with zooxanthellae, which provide essential nutrients through photosynthesis, while also capturing zooplankton for additional sustenance.