Small Red jumping nevously

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I went oversea trip for 3 days , that night i reached hm i on the hall light my red suddenly flip n jump many times , swimming nevously around the tank.

i immediately on my fish tank over night , next morning small red look fine n normal. so i off my fish tank light , haiz....... small red immediately flip n jump n swim nervously. Bo bian i on back my LED fish tank light again.

My fish tank light is still on until now....... any bro n sis have any idea to help or advise