Please help diagnose

[Sandy Beach]

What is going on with my Rummynose Tetra. Only one doing the shaking and it doesn't stop. It seems to be swimming with the others and going for food.Video

 

[Ram419]

Appears to be simliar to this post's description --> https://www.fishforums.net/threads/rummy-nose-tetra-swimming-strangely.269326/

Fish Symptoms (include full description including lesion, color, location, fish behavior): Rummy nose tetra swimming with tail pointing downwards, nose up, jerking. No sign of white or anything. I noticed it last night.

Sounds like a problem with swim bladder or constipation. There is no cure for swim bladder but constipation which has basically the same symptoms can be treated by feeding a cooked pea. Simply blanch a pea and remove the hull/skin. Mash it up good and feed. You can do enough for the whole tank as all the fish should love them. Sometimes it's also best to withhold food for 2 to 3 days after feeding the cooked pea.

 

[Sandy Beach]

Thank you, I'll look into it

 

[Byron]

Difficulty swimming normally is one symptom of several issues/diseases. Very rarely is it actually "swim bladder" itself, so one needs to find the underlying issue. As it notes in the linked thread, digestive disorder is one. Others include water problems (ammonia, nitrite, high nitrate, possibly parameters too (GH, pH, temperature), internal injury, genetic issue, and internal protozoan which will not be seen or identified without a necropsy by a biologist/microbiologist. The latter can spread very rapidly, killing one, two, three fish every day. Keep a close watch. I have seen this erratic swimming continue in the one fish for days, and never spread, and I have seen it kill the fish within one or two days without spreading.

Try the cooked shelled peas. I woould not advise any medications as it is next to impossible to know what might be the underlying issue if it is something disease-wise. Water parameters and conditions can be tested.

 

[Colin_T]

Swim bladder issue. The fish is constantly swimming to stay buoyant in the water and sinks as soon as it stops swimming. The only other thing that can cause this is if the fish has been eating sand or gravel, then they sink. But rummynose aren't renown substrate eaters, that is more along the lines of axolotls and some bottom dwelling fishes or goldfish.

Euthanise the fish because there's no cure for swim bladder problems.