update:
turtle is eating a bit now, I already started a new diet for him of fruits and veggies altnerating heads worth of pellets every other day.
he is eating a bit now, thanks for telling me to wait it out! i was hella worried
i'LL UPdate here if he doesn't eat again
btw my fish arn't fighting overnight anymore, they're fine
edit:
fed my turtles today
fed them both:
heads worth papaya
heads worth slice of carrot
2 pellets
The turtle that has issues, he ate everything except the pellet- wouldn't go near it!!

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pps.
I see that the pellets have vitamin d3 but should i get additional supplements?
he's getting awfully thin, and also his shell is curling with many retained scutes. everything else is fine except is sometimes scratches his face.mouth and he yawns 2 or 3 times a day