Combine the shrimp, goat cheese (or softened cream cheese), mayo, chopped green onion, cilantro, lime juice and sriracha in a mixing bowl and mix delicately with a large spoon until well combined.
If you want to serve as a dip, you can serve immediately with crackers or crudités.
To make the canapés:
Just before serving, pipe a small amount of the shrimp dip over round crackers or melba style toasts. Garnish each canapé with a small shrimp, a slice of cherry tomato, a fresh cilantro leaf and a splash of sriracha sauce, if desired.