I've never tasted a $1500 crappie, but I'll take your word that it was good. Words of wisdom for sure. I have heard of such infections from other people being finned or horned by catfish. In fact my brother was horned by a catfish in the heal of his hand that became infected and he had problems with the wound site for about 5 years when he finally dug out a seed looking thing (himself) from deep inside the then calloused and hardened wound site allowing it to finally heal completely.
"Just Like Iron Sharpens Iron... So it is that One Man Sharpens Another Man." Proverbs 27:17