My pajama cardinal only eats live pods off the glass, and believe me I have tried for approx. 8 months to show him there is more to life. Some fish are just stubborn....

Since no one else has done it, I feel its my job:
What on earth would possess some one to try and kill ten.... or eleven of the same fish?? Irresponsible! Why didn't you give up after the 2nd or 3rd and realize this fish ain't for you? Secondly, assuming gets you nowhere real quick. Ask the seller if you are unsure of the fish being captive bred. Ask to see the fish eat and make note of what they are feeding.