Abstract: Research was conducted on common pandora fish length 13-19 cm and body weight 26-80 g caught in the Novigrad see area (Adriatic coast, Croatia). The statistical significant (p<0.05) differences of changes in diameter of muscle fibers were determine in trunk dorsal muscle between 13-15, 15.5, 17 and 17.5 cm total body length examined fish. In the ventral muscle statistical significant (p<0.05) differences were determined only between 13-15 and 15.5 cm total length of examined fish. Very low activity of Lactic acid Dehydrogenase (LDH) and Succinic acid Dehydrogenase (SDH), moderate to high activity of acid stable Adenosinetriphosphatase (ATP) and larger amount of glycogen is found in all muscle fibers of dorsal and ventral trunk muscle and it mean that this fibers are white fast twitch glycolytic fibers and this trunk muscles are white muscle. In all investigated fish red fibers were placed superficially at the lateral side of the body as dark muscles clearly distinguished from the white ones. Muscle fiber diameter of dorsal muscle was progressive increased from 15 cm (34 g) to 19 cm (80 g) (hypertrophy) and very similar observation was in muscle fiber diameter of ventral muscle.
S. Nejedli, Z. Kozaric, I. Tlak Gajger and Z. Matasin, 2011. Relationsheep Beetwen Length, Body Weight and Histomorphology Trank Muscles of Common Pandora (Pagellus erythrinus Lineatus, 1758). Journal of Animal and Veterinary Advances, 10: 2181-2185.