the swim bladder is located in the dorsal portion in a fish.
where is the swim bladder located in a fish?
in the dorsal portion
the swim bladder normally consists of two gas-filled sacs located in the dorsal portion of the fish, although in a few primitive species, there is only a single sac. it has flexible walls that contract or expand according to the ambient pressure. the walls of the bladder contain very few blood vessels and are lined with guanine crystals, which make them impermeable to gases. by adjusting the gas pressurising organ using the gas gland or oval window the fish can obtain neutral buoyancy and ascend and descend to a large range of depths. due to the dorsal position it gives the fish lateral stability.
swim bladder
swim bladder disease





























swim bladder disease, also called swim bladder disorder or flipover, is a common ailment in aquarium fish. the swim bladder is an internal gas-filled organ that contributes to the ability of a fish to control its buoyancy, and thus to stay at the current water depth without having to waste energy in swimming. a fish with swim bladder disorder can float nose down tail up, or can float to the top or sink to the bottom of the aquarium. 





























section::::causes.
swim bladder disease