Enchytraeus crypticus
The forest floor extends below what we can see. Enchytraeus crypticus is a small enchytraeid worm considered for KA’AETÉ’s future living soil, but the soil system is not yet built and its culture has not been introduced.
Between soil grains
Enchytraeids are small annelid worms associated with damp soil and organic matter. They can contribute to decomposition and soil mixing. Tiny gaps between particles, their oxygen conditions and water films form a three-dimensional habitat rather than a flat surface.
What the research does—and does not—show
Enchytraeus crypticus is a recognised test organism in soil ecotoxicology, including work connected to OECD enchytraeid reproduction testing. These studies demonstrate the importance of soil conditions and reproduction, not a guarantee that the worm will thrive in any tropical vivarium.
Photo identification and culture
The image below is a real photograph of an Enchytraeus culture at genus level, not a verified photo of E. crypticus. KA’AETÉ will need a reliably identified captive culture, moist yet aerated soil, and an observed balance with other decomposers before adding this candidate.
STATUS · Described on the current KA’AETÉ species atlas as planned, subject to further compatibility and culture verification. Not yet introduced. Construction began on 16 October 2026.
Scientific research: Enchytraeus crypticus in soil ecotoxicology