Different influences of anxiety models, environmental enrichment, standard conditions and intraspecies variation (sex, personality and strain) on stress and quality of life in adult and juvenile zebrafish: A systematic review

•Some environmental enrichment paradigms produce anxiolytic-like effects and improve immunity.•Unpredictable chronic stress and aquarium-related stressors induce anxiogenic-like effects.•Developmental, social, intraspecies variation and test-related factors affect environmental manipulations.•Comparison of different levels of stress would define optimal ranges of husbandry, standardisation and stress resilience.