So I recently got two baby arowana and they weren’t eating but then they started to eat frozen fried blood worms and were both swimming and acting very normal. However I woke up this morning to find my arowana sitting on the bottom of the tank, I quickly changed half of the water from the tank and I noticed that the arowana would just float almost vertical from the top of the tank and swim only somethings but mostly he just looks dead (he’s not) just floating on the top of the tank and swimming. Please if anyone knows what to do any information will help, thank you.