Payame Noor University Experimental animal Biology 2322-2387 7 4 2019 04 21 Determination of age and growth parameters of Otolithes ruber in Persian Gulf waters (Hormuzgan) Determination of age and growth parameters of Otolithes ruber in Persian Gulf waters (Hormuzgan) 29 38 5678 10.30473/eab.2019.5678 FA Tooraj Valinasab Research Professor, Fisheries Sciences Research Institute of Iran, PO Box: 6116-14155, Tehran, Iran Eassa Kamali Research Instructor, Persian Gulf and Oman Sea Ecological Research Centre, Post Box: 79145-1597, Bandar Abbas, Iran Reza Dehghani Researcher, Persian Gulf and Oman Sea Ecological Research Centre, Post Box: 79145-1597, Bandar Abbas, Iran Hojjatollah Fourooghifard Assistant Professor, Persian Gulf and Oman Sea Ecological Research Centre, Post Box: 79145-1597, Bandar Abbas, Iran، Journal Article 2019 05 04 <strong>Abstract</strong> <br />The study of age and growth of aquatics is basic and necessary information for further fisheries management. By aging the fishes, we can estimate the population dynamics parameters such as growth and mortality rates. In this study the <em>Otolithes ruber</em> (Tiger toothed croaker) was selected as one of the most important and commercial species for aging from September 2008 to November 2009. During 15 months, a total of 540 specimens were collected and 238 sagitta otoliths were extracted and then were sectioned in laboratory using microtome cutter. The sectioned otoliths were aged by reading the increment rings. The overall Von-Bertalanffy growth equation was estimated as L_(t)= 72(1-e ^{-0.151(t+1.369)}). The smallest fish was 18 cm total length and with an estimated age of 0.25 yrs; and the biggest size was 54 cm with the age of 8 yrs. The Length-weight relationship was found as W=0.0064 TL^3.1268. The natural mortality of croaker was estimated 0.4604 per year. <strong>Abstract</strong> <br />The study of age and growth of aquatics is basic and necessary information for further fisheries management. By aging the fishes, we can estimate the population dynamics parameters such as growth and mortality rates. In this study the <em>Otolithes ruber</em> (Tiger toothed croaker) was selected as one of the most important and commercial species for aging from September 2008 to November 2009. During 15 months, a total of 540 specimens were collected and 238 sagitta otoliths were extracted and then were sectioned in laboratory using microtome cutter. The sectioned otoliths were aged by reading the increment rings. The overall Von-Bertalanffy growth equation was estimated as L_(t)= 72(1-e ^{-0.151(t+1.369)}). The smallest fish was 18 cm total length and with an estimated age of 0.25 yrs; and the biggest size was 54 cm with the age of 8 yrs. The Length-weight relationship was found as W=0.0064 TL^3.1268. The natural mortality of croaker was estimated 0.4604 per year. https://eab.journals.pnu.ac.ir/article_5678_6e0a644efd8fef37753d5cdd8b7387ab.pdf