Overfeeding my mirror carp?

[GeorgeHaddaway15]

I have been feeding my sturgeon twice a day since I got them. Problem is, the mirror carp get in on the frenzy too, and destroy the bloodworms. I'm worried they're becoming obese! I don't want to cut down on the sturgeon feeding, since they're young and they need a lot of food when young. What should I do? Pictures will be included. It has gotten this fat in just 2 weeks. You can see how it looked 2 weeks ago in one picture. Sorry for blurriness.

 

[Hendre]

Is there any way to isolate the carp while feeding everything else? That is going to become one fat fish

In all honesty it looks a little bloated, are you feeding other foods too?

 

[GeorgeHaddaway15]

Here's what I feed:
Bloodworms twice a day (my sturgeon need to be fed in small quantities multiple times a day, as they are still young.)
High protein sturgeon pellets every other day (I feed these to supplement the sturgeon, but it looks like the carp like them too.)
Water temp is at 58 degrees Fahrenheit.