So, on the planet Aqautas, the Aquata species is the apex species. They have cities underwater, made of an alien coral, and submarines to get around the planet. Crime is also an issue however. The Aqautas are humanoid, but have most of the major organs found in fish, including a swim bladder. If an Aqautas is shot in the swim bladder, can he/she survive?
Swim bladder is used for regulating buoyancy.
A pierced swim bladder (assuming no other damages to vital organs) would mean no depth control, thus the hurt Aqautas would sink to the bottom.
Being a water organism, the Aquatas would not drown, thus survival should be possible, unless the sinking happens in oceanic abysses, where death could be a consequence of:
- pressure due to depth
- starvation (I.e. being 6000 meters below the depth where their food grows)
- untreated bleeding
Bladder helps with neutral buoyancy and makes swimming easier but is not strictly needed. The individual could still swim, if she/he was strong enough.
Yes, they could survive.
Source: I bought a school of harlequin rasboras, and one of them had a problem with its swim bladder. It was constantly swimming up at a 45 degree angle, almost jumping to stay with his buddies.
A month later, I've still got the same number of fishies, but I can't tell which had the injured swim bladder. It must have healed.
Generally speaking, if the shot isn't to the head or heart, it can be survived.