That's a new one on me, I've had small ones on corn so shows anything's possible. TBH I'm not sure that I could for certain say I've ever caught any other species other than roach on tares. I've probably had the odd rudd, dace, skimmer and chublet on them but not that I can recall for sure.
It would have snapped at bait (or rather sucked in) as it went past out of reflex action.
Had them on corn - by accident.
A lad had a Tench on a jig the other week - again, jig sucked in out of reflex rather than a feeding fish.