Arizonagrace

Please help. I have two livebearer tanks. One is strictly guppies, the other mollies, swords and platys. The fish have begun to have difficulty in swimming. They look like they can't move well, and stay a lot on the bottom. I have lost 2 in the livebearer tank. The guppy tank is the same, except one guppy looks like she is paralyzed in the back. She doesn't move her back fin at all...clamped, and it is at an angle downward. Also, I noticed one has a red mark on her body. I lost a guppy a few days ago that had 2 red streaks on the body, but thought it was from the girls picking. I did lose one molly who got incredibly thin, even though she ate well. There are no other apparent indications of a disease. I can't tell if their bellies are swollen (doesn't seem like it) as most are pregnant.

I have done water changes and added more prime thinking if it was water conditions that would help. I check my water conditions, and the tanks are perfect. Guppy tank is a 12 gallon with filter, livebearer is a 30. 30 has 2 filters running and both tanks temp are above 80. I have added salt.

sjlchgo

Turn down the heat!! They are probably at the bottom because it's cooler there. They prefer 74-78 degree water. Cool them off and see if it helps. Only go down 2 degrees.

TFA101

For one thing, how many fish per tank do you have...

sounds like a numerous amount of diseases including "bloat", and possibly some fin rot or excessive stress. My diagnosis. Anyone who tells you otherwise is probably correct, and if thats true, the one to tell me I'm wrong... please dont scold me ""IM JUST A KID!!!""

COBettaCouple

What are the water conditions exact numbers and is it from an API liquid testing kit? 80 is tolerable for them, but they will be happier around 76.

If the fish are looking lethargic, it is likely a bacterial infection. Treat by feeding antibiotic food or if the fish aren't eating, use a full spectrum water antibiotic like triple sulfa or a combination of Maracyn and Maracyn 2.