Making the croquette mixture: Drain the sardines and chickpeas. Flake the sardines into a bowl. Finely chop the onion, garlic, and parsley.
In a blender, combine the chickpeas, onion, garlic, parsley, cumin, coriander, paprika, salt, and pepper. Blend until you achieve a smooth mixture. Add the flaked sardines and flour to the mixture. Mix well.
Shaping the croquettes: Take small portions of the mixture and shape them into walnut-sized balls. Slightly flatten each ball to form small patties.
Cooking: Heat the oil in a frying pan over medium heat. Fry the croquettes until they are golden and crispy on both sides. Drain on kitchen paper to remove excess oil.
Presentation: Arrange the croquettes on a serving platter. Serve hot with lemon wedges for squeezing.