weird columbian sharks

[danielle_adam]

why do my sharks swim around with there mouths open and stay in oen place and do it
it almos tlooks liek they are yawning
what is it??????

 

[Pufferpunk]

What are your water parameters? Ammonia, nitrIte, nitrAte, pH, SG?
How large tank are they in?
When was the tank set up?

Please answer ALL the above questions, so we can help.

 

[Dangerdoll]

didn't you ask thuis same question a couple of weeks ago?