Abstract Probiotics when applied in complex evolving (micro-)ecosystems. might be selectively beneficial or detrimental to pathogens when their prophylactic efficacies are prone to ambient interactions. Here. we document a counter-intuitive phenomenon that probiotic-treated zebrafish (Danio rerio) were respectively healthy at higher but succumbed at lower level of challenge with a pat... https://thegreensjunglebeautyshops.shop/product-category/singlet/