Lime ballan wrasse is a fish from the family of wrasse. They are a schooling fish that can reach a size of 2-4 cm. They areefish that eat small schooling fish and crustacea. They have a bright lemon-green color and a lime-green flesh. They are a schooling fish that can reach a size of 2-4 cm. They areefish that eat small schooling fish and crustacea.