Can I fix my arowana's behavior?

Question

I have a silver arowana named Titan; he's a little over five inches long, and he's been with me for about three months and had settled in quickly.

He shares the tank with a fantail and a loach. He eats bloodworms, flakes, and pellets.

But lately, Titan's stopped eating and makes occasional jerky movements in the water as if he's spooked or something, and he had never displayed this behavior before. He hasn't eaten in almost a week.

Do you know why he is this way and if it's possible to fix the behavior?

Thanks.

Answer 1

hi there, i need some helps,i have a arowana about 10inchs jardini is so mean even he's full , still mean and trying to hurts others stingray,and my tank over 100gallons,i need some ideals how to  treats my arowana get along with others fishes and stringray,,???? any ideal??? thanks