Red arowana not eating

[goldfish&koi]

Hi All

can all the pro of Arowana help me on this.

My red aro that is about 13inches stop eating for about nearly 3months plus but in this 3++ months the aro did eat one time half piece of prawn without shell and the other time 5 piece of super worm. That's all...

Before this issue start this red aro take about 15 to 20 piece of super worm (depending on the size) a day for at least 4months.

tank mate before this issue is with 6 discus but have a divider as aro keep disturbing them and 2 loach . divider put in place for about 2months before this happen.

now aro is with 2 loach that is about 3inches or the most 4inches in a 5x2x2ft tank. filter use is OHF. media(age 1year+), normal filter wool, black bact wool, bact house and some coral chips.

Action taken before : deworm using parzi gold, salt 0.3%, methylene blue with yellow medication that ppl use to treat new export fish, Indian Almond Leaves and Ketapang leaves.

to add on sometime the aro will jump and injury itself. sometime is right after water change and sometime is 4 to 6 days after water change.