Place the tuna in a bowl with the poke dressing ingredients. Stir to combine and set aside to marinade.While the tuna marinades, combine the avocado, jalapeno, cilantro and lime juice in a medium sized mixing bowl and season with salt and pepper. Whisk together until creamy. Taste and adjust, if needed.Thoroughly pat dry the cucumber noodles and add them to the mixing bowl and toss the noodles until they’re completely coated in the avocado sauce.Divide the cucumber noodles into three bowls and top with equal amounts of the tuna poke, using a slotted spoon to portion out the poke, to avoid extra liquid. Serve.