Yes, there are differences between Huck's pranks and deceptions and those of Duke and Dauphin in Mark Twain's novel "The Adventures of Huckleberry Finn."
Huck Finn is the main protagonist of the story, and he is often portrayed as a mischievous and independent-minded character. He engages in pranks and deceptions, such as faking his own death and creating elaborate schemes to escape from dangerous situations, but his actions are generally driven by a sense of survival and self-preservation. He often uses his cunning and resourcefulness to protect himself and his friends, especially his friend Jim, who is a runaway slave.
On the other hand, Duke and Dauphin are two con artists who join Huck and Jim on their journey down the Mississippi River. They are depicted as deceitful and manipulative characters who use their trickery and scams to exploit others for their own personal gain. Duke and Dauphin engage in fraudulent activities, such as posing as royalty and defrauding unsuspecting people along the river, including Huck and Jim. Their actions are driven by greed and selfishness, and they show little regard for the well-being or rights of others.
While Huck's pranks and deceptions can be seen as mischievous or even morally justifiable in certain circumstances, Duke and Dauphin's actions are portrayed as dishonest and unethical throughout the novel. The differences in their motives, intentions, and overall characterizations make Huck's pranks and deceptions distinct from those of Duke and Dauphin in "The Adventures of Huckleberry Finn."