Tetra Trouble

[bananapeel22]

3 of my five tetras have enlarged bellys and act like they are wearing a life jacket they keep floating up when they want to swim down i recently released swordtail fry into the community tank and i beleive they ate them or something because they are SUPER fat and im really afraid for my fry and my tetras any information please help oh and another strange thing is that 3 tetras are doing this but i only put 2 fry in the tank.

 

[WILDER]

Sounds like swim bladder but need to make sure.

Size of tank in gallons or litres.
How many fish and which type.
Water stats in ammonia, nitrite, nitrate, and ph.
What do you feed the fish.

Signs of swim bladder are
Fish will sometimes look bloated.
Unable to maintain balance in water.
Head standing.
Sometimes tail will look like it's weighing the fish down in the water.
Turning upside down, or barrel rolling.
Tilting to onside when swimming.
Bopping up and down in the water.
Are scales sticking out.