Hey!
For the last 3 days one of my yoyo-loaches (large adult) has been occasionally lying docile in a cave, sideways. Then he comes out and acts completely normal. He is however increasingly frequently flashing on objects around the tank. Not constantly, but in shifts rather frequently; enough to notice it several times after watching him for 15 min. Yesterday he only flashed in his cave, now he flashes everywhere. He is also chasing the other yoyo-loach around the tank, and "yawning" with his mouth/puffing out his small mouth spikes once every few mins.
None of the other fish are frequently flashing (maybe once or twice if I observe them over several hours, but never repeatedly). There are no signs of ich. Latest addition was 2 albino pleco's on march 15th, so ich surely would have spread by now.
Ammonia at 0.
125-130 gallon tank. 25-40% waterchanges weekly. Good filtration. No carbon/meds. Decently planted. Temp at 25-26C.
What could this be? What should I do? Would prefer not treating for ich unless that is the problem.
Thanks!
EDIT: Forgot to mention, he is very active between his docile periods. Almost as if he is sleeping then wakes up. He moves normally, other than the flashing. He chases food, and eats well. No abnormal behaviour other than flashing, and lying sideways when sleeping (heard lying sideways is normal for yoyo-loaches).
For the last 3 days one of my yoyo-loaches (large adult) has been occasionally lying docile in a cave, sideways. Then he comes out and acts completely normal. He is however increasingly frequently flashing on objects around the tank. Not constantly, but in shifts rather frequently; enough to notice it several times after watching him for 15 min. Yesterday he only flashed in his cave, now he flashes everywhere. He is also chasing the other yoyo-loach around the tank, and "yawning" with his mouth/puffing out his small mouth spikes once every few mins.
None of the other fish are frequently flashing (maybe once or twice if I observe them over several hours, but never repeatedly). There are no signs of ich. Latest addition was 2 albino pleco's on march 15th, so ich surely would have spread by now.
Ammonia at 0.
125-130 gallon tank. 25-40% waterchanges weekly. Good filtration. No carbon/meds. Decently planted. Temp at 25-26C.
What could this be? What should I do? Would prefer not treating for ich unless that is the problem.
Thanks!
EDIT: Forgot to mention, he is very active between his docile periods. Almost as if he is sleeping then wakes up. He moves normally, other than the flashing. He chases food, and eats well. No abnormal behaviour other than flashing, and lying sideways when sleeping (heard lying sideways is normal for yoyo-loaches).
