The tub gurnard, Chelidonichthys lucerna (also C. lucernus, Trigla lucerna, T. corax) is a species of bottom-dwelling coastal fish with a spiny armored head and fingerlike pectoral fins used for crawling along the sea bottom. The tub gurnard is a reddish fish with blue pectoral fins.
It is a coastal species, prevalent in the Mediterranean Sea (especially the western Mediterranean and the northern Aegean) and the Atlantic Ocean from Norway to Cape Blanc. It is also present, though less common, in the Black Sea, the southern Baltic and the eastern Mediterranean.
It has a long mating season, from May to August in Europe, ranging to year round in Africa.
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