"He remarked to me then," said that mildest of men, "'If your Snark be a Snark, that is right: Fetch it home by all means—you may serve it with greens, And it's handy for striking a light.
"Greens" references "Snake in the grass" while handy for striking a light seems like the rough hide of a shark. The Snark is apparently a portmaneau of Snake and Shark which can be seen as lying and predation.
