Swimbladderless tropical fish

Hi,
so I just watched a video and in it I saw a saltwater fish that had no swimbladder and it looked absolutely amazing; so I was wondering...do you get any tropical fish that don't have a swimbladder. If so, could you pls let me know.

 

To the best of my knowledge, cartiligenous fish such as sharks and rays dont have swim bladders.
Some very fast swimmers such as Tuna dont have swim bladders
Some bottom dwellers such as catfish or loaches dont either and some have it but its not used as a swim bladder

 

@MariaS is right, swimbladders aren't present in all fish. It depends on whether a species uses it or not - many bottom dwellers have no use, tuna use hydrodynamic lift to keep their position in the water column.

Interestingly, the clownfish we've been working with recently either do or do not have a swimbladder; these animals are likely in the process of losing their swimbladder, as they're spending more time between anemone tentacles than swimming around. But this needs further investigation, of course.

 

Thanks for the reply... I didn't actually know that. maybe a loach or two wont be to bad.
Thanks again

 

Look at the Tanganyikan.... Eretmodus cyanostictus
Regards

 

African Steatocranus have a reduced swim bladder due to life in currents. Amusing to watch them swim