Common name: Johnston's Sponge

General information

Leuconia johnstoni, commonly known as Johnston's Sponge, is a species of calcareous sponge found in marine environments. Unlike the more colorful and popular sponges in the aquarium trade, Johnston's Sponge is often white or cream-colored and has a more subtle appearance. This sponge is part of the class Calcarea, which is characterized by spicules made of calcium carbonate. These spicules provide structural support and deter predators.

Care

Johnston's Sponge requires a well-established aquarium with stable water conditions. They are filter feeders and rely on water flow to bring them food particles. It is important to maintain a moderate to strong water flow and high water quality, as sponges are sensitive to elevated levels of nitrates and phosphates. They should not be exposed to air, as this can cause tissue damage.

Reproduction

Calcareous sponges like Leuconia johnstoni reproduce both sexually and asexually. Sexual reproduction involves the release of gametes into the water column, while asexual reproduction can occur through budding. In the aquarium, sponges may reproduce asexually if conditions are favorable.

Habitat

Leuconia johnstoni is typically found in shaded or semi-shaded areas on the reef, often in crevices or under overhangs. They are distributed in various parts of the world's oceans, usually at depths where light penetration is reduced but water flow remains consistent.