Blue Whale Catfish

[Freshy88]

Hi everyone, I am posting this for a friend of mine who has 3 Blue Whale Catfish.

Now their is 1 of them that seems to always just be resting on the sand away from others and the other 2 seem to be fighting the current from the filter. Is it normal for them to just rest away from current?

He also has not been eating while the other 2 are just going wild and are moving alot.

I had told him to purchase a powerhead because they do require current. I know it would be good to have water parameters but I do not have them until later tonight. But I can gurantee hes been doing water changes every 3-4 days.

Any suggestions would be good hopefully he will still be alive by the time he gets home to check water parameters that way I can post them on here.

Thanks