Hi all, need some advice asap. I have a pair of 26-28in silver arowana both have been feeding almost out off my hand, however roughly about 6 weeks ago they have become extremely skittish and have both jumped out my aquarium about 5 times each. I can only feed them. At night when they can't see me or others in my house. I suspected it was another fish that might have scared them, but all the other fish are way to small for the silvers to be bothered by them. So what could have caused them to become soo startled continuously ????, everytime anyone comes close to the tank they go crazy and you have to walk away or the will jump. I thought it was the colour off clothes they might be scared off so I tested it, wore almost every colour and they jumped at all coloured t shirts. Tried dimming the aquarium lights still scared, tried rearranging my aquascape and still scared so I'm lost