fish crucian carp (carassius carassius) on the background of a 5 mm measurement grid. ichthyology research.

animal fish seafood food dish invertebrate cuisine underwater aquarium reptile meat wildlife wing amphibian bird mammal reef organism crucian carp carassius background measurement grid ichthyology research gibelio actinopterygii golden prussian carp cyprininae silver scales isolated raw plenty summer head view mouth fresh sport lying fish fauna animalia pond fin freshwater water river lake crucian scale goldfish white prussian catch side carassius nature tail fishing food closeup background animal gibel underwater alive