Antimycin A complex is a bacterial metabolite complex that has been found in Streptomyces and is composed of the major components antimycin A₁ , -A₂ , -A₃ , and -A₄ , as well as minor components, including antimycin A₅ and -A₆, among others.1 It induces the synthesis of carotenoids in M. marinum when used at concentrations ranging from 3.3 to 160 µM.2 Antimycin A complex (25-125 ppb) has teleocidal activity against goldfish.1

1.Kluepfel, D., Sehgal, S.N., and Vezina, C.Antimycin A components. I. Isolation and biological activity.J. Antibiot. (Tokyo)23(2)75-80(1970) 2.Batra, P.P., Harbin, T.L., Howes, C.D., et al.A study of the relationship of structure and activity of antimycin A in the induction of carotenoid synthesis in Mycobacterium marinumJ. Biol. Chem.246(23)7125-7130(1971)