Why is keeping an isolated X-ray Tetra detrimental to its health?
Answer
Being a schooling species, isolation causes stress, lethargy, and potential illness.
Like many members of the Characin group, the X-ray Tetra possesses a strong schooling instinct which is vital for its psychological and physical well-being. When kept alone, the absence of conspecifics prevents the fish from feeling secure, triggering a stress response. This prolonged stress manifests as lethargy, inhibited natural behavior, and an increased susceptibility to illness, underscoring the necessity of keeping them in groups of six or more individuals.
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