3 Answers

"Some fish have the type of swim bladder that's connected to the gut. They can burp gas to relieve pressure. Other fish can't burp because their swim bladders don't have this connection." Fish that can burp gas out of their swim bladder include trout and salmon.

8 years ago. Rating: 3
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....in public ?

8 years ago. Rating: 3
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they swallow a lot of air so I guess they burp.

8 years ago. Rating: 0
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