Physiologic implications of inter-hormonal interference in fish: Lessons from the interaction of adrenaline with cortisol and thyroid hormones in climbing perch (Anabas testudineus Bloch)

► Adrenaline challenge to propranolol pre-treated fish reduces the osmotic competencies of the gills and kidneys. ► Adrenaline interacts with THs and cortisol in intact climbing perch. ► Propranolol treatment modifies the adrenaline interaction on cortisol and THs. ► Evidences thus support the hypothesis of the phenomenon of inter-hormonal interference.