Keeping Carassius auratus in a confined, spherical glass container is a common practice. This environment, often selected for aesthetic appeal, presents specific challenges to the well-being of the occupant. An example of this involves observing how the occupant’s movement are limited by the containers curvature.
The prevalence of this practice stems from its perceived simplicity and low cost. Historically, it has been a traditional pet-keeping method, easily accessible and visually engaging. However, awareness of the potential negative impacts on the animal’s health and quality of life is growing. Concerns arise regarding water quality maintenance, adequate space for natural behaviors, and the lack of environmental enrichment.