Hello and happy new year
As you can see in the picture below, my oscar tails are turning in the black!
I think this is some kind of illness, but i don't know its name and how to cure!
if any one know please help me :-? (they was ok untill two weeks ago)

sorry for my bad english
regards

All looks fine to me. Some albinos have a black edge to the tail.

as marcus has pointed out it is a common occurance to have a lutino oscar with black edges on its fin. the oscar in pic you posted looks fine to me.


btw welcome to the site

welcome to the site.

oscar can have film layer on thier fins as they grow up.
as long as they do not show any sudden changes in mood,
you don't have to worry.

Thanks for your answers
There is another issuse, in a weeks ago my oscars were ill by "ich" and i raised the temp up to 30c and it's gone.
but after that my oscars have another problem like they are stressed or some thing like that, they shake their tails very fast and have a fear of any outside changes!
if you think this is unnormall please help me

all of my oscars shake their tails or quiver on occasion. im not sure if its an aggression, mating, or territorial thing but nothing ever comes of it. i wouldnt worry about it to much since it seems to be a common occurance.

Shahriar wrote:

wiggling tails or shaking it fast is a norm for oscar....
you will find out sooner, they will sulk as if gonna fight
to death..... no need to worry as long as they take foods
eagerly.

Tail quivering is quite normal so I shouldn't worry about it. You'll often observe this with a pair of Oscars. It's obviously some kind of communication between them.

You are noticing a lot of how your Oscars act and look. this is very important and you will soon learn to know at a glance if there's a problem if you keep up your close monitoring. This is what a lot of fish keeping is about,watching learning and enjoying your fish,well done.