diskus

Diskus may refer to two distinct subjects in biology and medicine. In ichthyology, the diskus or discus fish refers to several species of round-bodied South American cichlids in the genus Symphysodon, native to the Amazon Basin. They are prized in freshwater aquariums for their distinctive circular shape and varied coloration. Recognized species include Symphysodon discus, Symphysodon aequifasciatus, and Symphysodon haraldi. They inhabit slow, warm, acidic, tannin-rich waters of flooded forests and rivers. In captivity they require soft, stable water with temperatures around 28–30°C and a pH near 6.0–6.5. They are omnivorous, feeding on high-quality pellets, vegetables, and live or frozen foods. Breeding is typically biparental mouthbrooding, with both parents guarding the eggs and fry. In aquarium settings, discus are considered relatively demanding and are often kept by experienced hobbyists in groups or stable pairs with consistent water quality.

Diskus is also the brand-name for a dry-powder inhaler used to administer certain respiratory medications, developed by GlaxoSmithKline. The Diskus device delivers a measured dose of powdered medication in a blister pack; the patient inhales through the mouthpiece to receive the dose. Diskus products have included formulations such as fluticasone propionate (a corticosteroid) and, in combination products, fluticasone propionate with salmeterol (a long-acting beta-agonist). Diskus is intended for chronic management of asthma or COPD and is not used for acute symptoms. Users should follow physician instructions, store and prime the device as directed, and rinse the mouth after use to reduce the risk of oropharyngeal candidiasis.