Body indentation

[David_Hui]

Hi,

Some of my 3 to 4 inches fishes are showing indentation on the body. I don't know if I over fed them or is it a disease. It is at the middle section just above the stomach. It looks like someone use their finger and gently pressed in. Fishes behave normal and they swim around and eat fine. These fishes do seems to be growing in size as well. But, it just the indentation bothers me. What could it be?? They are in a 55 tall tank. Thanks in advance.

David

PS I feed California Black Worm, Frozen Blood Worm, and Beef Heart mix and change water daily at about 30 - 50%.

[DISCUS USA]

david,i had one discus with indentation exactly where your discus has it,mine was visible on one side only.that fish ended up dying and slowly 3 more of my fish died days later.have you feed them live food or bought new fish.Im not sure but good chance its paracites and must be treated and quarintened imediately before your contaminate others in tank.thats all i got for you :-\ good luck. ;)