They have only three"spiny spikes" , the leading edge of their pectoral fins and the leading dorsal ray of the the dorsal fin. Fish with more (and all have stuck me more): walleye, perch, smallmouth bass, largemouth bass, crappie, rock bass, pumpkin seed. Lip 'em, or slide your hand up from the back to the front and the "spines" are great to hold on to, try that with the other fish mentioned. The barbels, "whiskers" are nothing to worry about.
Now a leach is a whole 'nother story...er thread. lol