Need some urgent help as I’m not sure if this fish is dying...

[Fishkeeper127]

Have a 134L tank with under 20 fish - tanks been setup for 3-4 months, temperature is correct.

The fish in question is a silver shark (not sure if that’s the official species name)

It isn’t young or small and is in the tank along with a similar sized fish of the same species, they were bought together from the same shop, they’ve been in the tank for about a month and seemed to be doing really well.

One of them now is just slightly moving it’s fins to keep itself pretty much exactly still in an open spot of the tank, not hidden just out in the open, it’s been like this for nearly 48 hours now... any ideas of what is going on... is something wrong or is this normal, temperature has not changed and no new fish have been added since this fish was added...

 

[foxgirl158]

Pictures of the fish in question?
Parameters? (Ammonia, nitrite, nitrate, ect)

 

[Colin_T]

pictures and video?
upload the video to YouTube, then copy & paste the link here.

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Wipe the inside of the glass down with a clean fish sponge. This removes the biofilm on the glass and the biofilm will contain lots of harmful bacteria, fungus, protozoans and various other microscopic life forms.

Do a 75% water change and gravel clean the substrate every day for a week or until the problem is identified. The water changes and gravel cleaning will reduce the number of disease organisms in the water and provide a cleaner environment for the fish to recover in.
Make sure any new water is free of chlorine/ chloramine before it is added to the tank.

Clean the filter if it hasn't been done in the last 2 weeks. However, if the filter is less than 6 weeks old, do not clean it. Wash the filter materials/ media in a bucket of tank water and re-use them. Tip the bucket of dirty water on the garden/ lawn. Cleaning the filter means less gunk and cleaner water with fewer pathogens.

Increase surface turbulence/ aeration to maximise the dissolved oxygen in the water.

 

[Fishkeeper127]

pictures and video?
upload the video to YouTube, then copy & paste the link here.

-------------------
Wipe the inside of the glass down with a clean fish sponge. This removes the biofilm on the glass and the biofilm will contain lots of harmful bacteria, fungus, protozoans and various other microscopic life forms.

Do a 75% water change and gravel clean the substrate every day for a week or until the problem is identified. The water changes and gravel cleaning will reduce the number of disease organisms in the water and provide a cleaner environment for the fish to recover in.
Make sure any new water is free of chlorine/ chloramine before it is added to the tank.

Clean the filter if it hasn't been done in the last 2 weeks. However, if the filter is less than 6 weeks old, do not clean it. Wash the filter materials/ media in a bucket of tank water and re-use them. Tip the bucket of dirty water on the garden/ lawn. Cleaning the filter means less gunk and cleaner water with fewer pathogens.

Increase surface turbulence/ aeration to maximise the dissolved oxygen in the water.

Thankyou will try these things... I have just seen him leave this position/state and act semi-normal, following the other silver shark swimming together etc (this is what they usually do) and then return to the exact same position and just do what it was doing before, slight movements of its fins to keep itself almost exactly still..???

 

[Slaphppy7]

Welcome to TFF.

As stated above, we need to know the readings for ammonia, nitrItes, and nitrAtes, using a liquid test kit, paper strips are mostly useless.

Get an API Freshwater Master test kit, run those tests, and post the results here. What kind of water conditioner are you using?

Did you cycle the tank before adding fish?