Angelfish Not Eating

[bikerfish]

Hi all This is for a friend
She bought 2 angelfish about a month ago and they were both fine , For the last couple of days 1 has been going to eat and just spitting it out . Today she went and bought some live brine shrimp and again straight away went to eat and then just spat out what it put in his mouth . His poo has now gone white and stringy. The water stats are good no ammonia or nitrite and the tank is 3 years old so well established apart from the angelfish , my friend bought 2 rams which are ok and a couple of new plants, same time.
All of her other fish are not showing any signs of not being unwell .
I know angels can be picky eaters , this was why she got some live brine shrimp to tempt him , but he acts like he is really hungry then just spits it out . Apart from this he has no other signs of anything wrong with him.
Her tank is 300lt and has roughly 25 fish in  and she does 25% water change and cleans substrate weekly and also big clean once a month which includes filter .
 
Also the other angelfish picks on this 1 quite a lot could it be to do with that but then that would not explain the white stringy poo .
I know I will get some great advice on here
cheers for reading
cathy
 

 

[techen]

Clear white poo sounds like a internal parasite, I'd be looking at QT the angel and treating it for something along those lines.

 

[bikerfish]

Hi Cheers for answering , can this infect the other fish as she has bottom feeders also other cichilds that sift through the sand ? so would it be better to dose the tank just in case ?
cathy

 

[techen]

It could pass it and move onto the substrate being that it's still alive. You could treat the entire tank if you wish, But that's where I'd start.

 

[bikerfish]

Hi Cheers for answering , I have passed on your info to her

cathy