_____________________________________________________________________________________________________ *Corresponding author: Email: abdul19532001@yahoo.com; Asian Journal of Fisheries and Aquatic Research 12(6): 9-21, 2021; Article no.AJFAR.69507 ISSN: 2582-3760 Aspects of Population Dynamics of Tiger Tooth Croaker, Otolithes ruber (Bloch and Schneider, 1801) from Northwest Arabian Gulf, Iraq Abdul-Razak M. Mohamed 1* and Ali H. Al-Hassani 1 1 Department of Fisheries and Marine Resources, College of Agriculture, University of Basrah, Iraq. Authors’ contributions This work was carried out in collaboration among both authors. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/AJFAR/2021/v12i630249 Editor(s): (1) Dr. Jorge Castro Mejia, Universidad Autonoma Metropolitana Xochimilco, Mexico. Reviewers: (1) Glenn L. Sia Su,University of the Philippines Manila, Philippines. (2) Pradeep S. Deshmukh, Government Vidarbha Institute of Science and Humanities, India. Complete Peer review History: http://www.sdiarticle4.com/review-history/69507 Received 06 April 2021 Accepted 12 June 2021 Published 16 June 2021 ABSTRACT The present study consists of the growth, mortality, relative yield recruit and virtual population analysis of tigertooth croaker, Otolithes ruber from Iraqi marine waters, northwest Arabian Gulf between February 2020 and January 2021. Analysis of population dynamics employed methods fitted in FiSAT II software using pooled length-frequencies. A total of 3835 individuals of O. ruber ranged from 17.0 to 60.0 cm have been collected. The exponent (b) of the length-weight relationship was found to be 2.755. The von Bertalanffy growth parameters (L∞ and K) were estimated as 68.5 cm and 0.36, respectively, while the growth performance index (Ø') was 3.228. The total mortality (Z) was calculated as 1.10, while the natural and fishing mortality rates were 0.69 and 0.41, respectively, and the current exploitation rate (E current ) was 0.38. Fish were recruited to the fishery at a mean size of L 50 = 20.55 cm. The recruitment pattern of O. ruber was continuous throughout the year with two major peaks. The analysis of yield-per-recruit (Y/R’) indicates that the current exploitation rate was below the biological target reference points (E 0.1 = 0.40 and E max = 0.53), refer to the stock of O. ruber is underexploited. The 27 cm length group was more vulnerable to fishing and more harvested according to virtual population analysis. sLength at first capture was higher than the length at first maturity of the species in the region. For management purposes, more yields could be obtained by increasing the mesh sizes of the nets employed in the fishing of the species. Original Research Article