STONEDFISH;597151; said:
Aros scare easily... try approaching slowly, with the lights out in the room your tank is in, maybe disguise yourself as a piece of furniture, whatever makes it harder for the fish to see you. Is your tank in a place with a lot of traffic?
STNDFSH
Yes you do need to approach and move slowly, but I disagree with keeping room lights off and disgusing yourself, I'd love to see someone do a waterchange disgused as a couch.
First thing, I'm sue you already know you need to get a larger tank, your Aro will outgrow the 75g in the next few months.
As for now your tank needs to be located in a low traffic area. Also if you can keep the tank up to where you are near eye level with it. If you cannot do this you may want to approach on your knees so you are at eye level. make sure you have the room well lit so your aro knows you are approaching. if you approach in a dark room you will suddenly apear as the tank lights will illuminate you. move slowly but not to the point as if you are stocking or sneaking up on him.
AROS JUMP!!! Your tank lid needs to be very secure and sealed if you have a space the aro could fit through when frightened he could get through it.
Arowanas don't hide, they're fast so if they feel threatened they try to get away, but in a tank that can't happen. You may want to buy a couple of the large fake lilly pads that are made for ponds, you will find your aro stays close to them as it may provide some security, plus it is fun to put a dozen crickets on them and let your aro hunt them.
Read all the posts, remember they are advise, past experiences from lots of members, some things may or may not work with your fish. I would spend as much time with the fish as you can, he will eventually get used to and welcome your presense.
When you post, please provide all info you can, tank size including filtering and decor. What you feed, Water parameters and changing schedule. the more info you provide the better chance of finding someone with a similar experience.
Good luck.