Common name: Slimy Branching Sponge
General information
The Slimy Branching Sponge, Agelas gracilis, is a fascinating species of sponge found in various reef environments. This sponge is known for its unique branching structure and slimy texture, which is a result of the protective mucus it secretes. The coloration of Agelas gracilis can range from orange to brown, and it often has a rough, conulose surface.
Sponges like Agelas gracilis are filter feeders, playing a crucial role in the ecosystem by filtering water and removing particulate organic matter. They are also known for their secondary metabolites, which have antimicrobial properties and can deter predators.
Details
- Recommended minimum tank volume
- 100 liter (26 gallons)
- Salinity
- S.G. 1.023 to 1.025
- Temperature
- 24 to 28 °C (75 to 82 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 30 cm (1′)
- Care level
- Moderate to difficult Sensitive to water quality.
- Diet
- Detritivore Feeds on detritus and bacteria.
- Reefsafe
- Yes
- Aggression
- Peaceful
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumSpongesPorifera
- ClassDemospongesDemospongiae
- OrderAgelasid SpongesAgelasida
- FamilyAgelas spongesAgelasidae
- GenusAgelas SpongesAgelas
- SpeciesSlimy Branching SpongeAgelas gracilis Whitelegge, 1897
Care
In the aquarium, Agelas gracilis requires a well-established system with stable water conditions. They thrive in moderate to strong water flow, which facilitates their filter-feeding behavior. It's important to maintain good water quality, as sponges are sensitive to high levels of nitrates and pollutants.
Feeding can be supplemented with fine particulate organic foods, but care should be taken to avoid overfeeding, which can lead to water quality issues.
Reproduction
Sponges, including Agelas gracilis, have a unique reproductive strategy. They can reproduce both sexually and asexually. Sexual reproduction involves the release of sperm into the water column, which then fertilizes eggs in other sponges. Asexually, sponges can regenerate from fragments, a process known as budding.
Symbiosis
While Agelas gracilis does not have the same type of symbiotic relationships as some corals or anemones, it does host a variety of microorganisms within its tissues. These microorganisms can include bacteria and single-celled algae, which may contribute to the sponge's nutrition and defense mechanisms.
Habitat
Agelas gracilis is typically found in tropical and subtropical reef environments. They are often located on reef slopes and overhangs where water flow is consistent. This species can be found at various depths, often extending into deeper waters beyond typical recreational diving limits.