Help my golden loach, can’t swim.

[Bffloach]

My golden loach for the last week cant swim.. He's still alive eats and wants to move but only has top moves a lil..
If he gets scared he can swarm off but not like a jolt as he usually does.. He tried to come to me when I call him but he cant.
I want to Co give him his belly rub and her didnt roll over for me I hade to move him! The only thing I can think of us his best friend accidentally stung him while the was swimming and she jolted up to get her air.. (Such is a female about a year old cory albino cat fish)??
How to help him or know even how to know what's wrong with my best friend .. Ill lose it with out him..
When its night time he goes in to his other tank on my night stand and sleeps near me.. Of i dint he sneaks it of his 50 gallon or hurts him self trying.. Any kind of help???

 

[FishDin]

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Thanks

 

[fish 321]

Sooo there could be many things wrong. First it could be your water quality, second it could be that you give it belly rubs, fish shouldn’t really be touched. And third it could be stress from moving it from one tank to the other at night. Giving us water parameters first would help figure things out.