Dwarf Gourami gasping for air?

Hello! I have one flame dwarf gourami in a 15-gallon tank with three platys and five ADFs. Today, the gourami seems to be gasping for air. He is moving around fine, not staying at the top or the bottom or anything, just opening and closing his mouth quite rapidly. I know this can be a sign of poor water quality, but everyone else in the tank is completely fine and my parameters are good. He has plenty of hiding spots and the tank is not overstocked by any means, so I don't see why he would be very stressed, but that's the only thing I can think of being wrong. He doesn't seem sick at all and his physical appearance is just fine. Any ideas?

 

If he is moving around and swimming normally and eating the only other question I would have is oxygen in the tank and if you have enough movement in the water or that you have enough room at the top of the tank for him to catch a breath. Otherwise, he sounds healthy.

 

Think you should read about gouramis.
They've a second breathing system and can take in air from the surface.

 

Think you should read about gouramis.
They've a second breathing system and can take in air from the surface.

he's not doing this at the surface, though! He's swimming around normally and just rapidly opening and closing his mouth.

If he is moving around and swimming normally and eating the only other question I would have is oxygen in the tank and if you have enough movement in the water or that you have enough room at the top of the tank for him to catch a breath. Otherwise, he sounds healthy.

There is definitely enough room at the top, and I use an aqueon quiet flow 20 (on a 15 gallon tank) which definitely provides a good amount of movement, but maybe it's not enough! should I get a more powerful filter perhaps?

 

he's not doing this at the surface, though! He's swimming around normally and just rapidly opening and closing his mouth.

There is definitely enough room at the top, and I use an aqueon quiet flow 20 (on a 15 gallon tank) which definitely provides a good amount of movement, but maybe it's not enough! should I get a more powerful filter perhaps?

Ahh apologies. Misunderstood that

 

I'm not sure there is a problem. Looking at my blue powder dwarf he rapidly opens and closes his mouth and he is just fine. Working from home I can stare at my fish all day I'm really not sure you have a problem to be honest.