I have never really had much luck with mealworms and any of my fish, even the jags don't like them. I would try and stick to harvesting any insects yourself. I have dropped a few flies, large mosquitos, and crickets in the tank a few times though with no ill effects.
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"There he goes - one of God's own prototypes -
a high powered mutant of some kind never even considered for mass production.
Too weird to live, and too rare to die".
Fear and Loathing in Las Vegas