Cichlid won't eat

[Green Baron]

I recently added two peacock bass ( 20cm & 15cm) to a 250g tank populated with central american cichlids. They are active and look great. One problem.. the smaller one won't eat! it's been a few days and it won't eat anything (neither dry cichlids food pellet nor frozen shrimps). According to the seller (private breeder) it ate dry cichlids food pellet . What can I do to get it to eat...it taste all foods but spit it out.. r? please help

Try some rosy reds

 

[AviB]

Still not eating.. please more ideas

 

[AviB]

Still not eating.. please more ideas

 

[AviB]

After two weeks that it didn't touch any food, I moved it to a 50g aquarium with 1 midas and gave it frozen blood worms.
TODAY he started eating the worms