@Article{, title={Fish zonation patterns in East Hammer tidal marsh /Basrah-Iraq}, author={Hussain , N.A* and Abdalhsan, H.Th. and Abduijaleel, S. A.}, journal={Marsh Bulletin مجلة الاهوار}, volume={14}, number={2}, pages={88-101}, year={2019}, abstract={Zonation patterns of nine fish species belong to five origins, two native species Planiliza abu; Silurus triostegus, three marine species (Tenualosa ilisha,Bathygopius fuscus ; Thyressa whitheadi) ,two exotic species (Coptodon Zillii,Carassius auratus ), one ornamental species (Pocilia latipinna ) and one invader species Hemiculter leuciscuius, were studied in East Hammer tidal marsh in three stations ( Al-Sada ,Al-Mansoury ; Al-Burkha ), during four seasons from autumn 2018 to summer2019. Patterns were different according to the species needs. Native species P.abu tend to migrate to the intertidal zone during the primary productivity bloom, native predators S.triostegus deployed seasonal patterns nearby the intertidal zone ambushing small prey. Marine anadromus T.ilish migrate to the tidal zone of East Hammer for spawning, While another two species, T.whitheadi and B.fuscus depend on the marsh as a feeding ground. Exotic species C.zillii and C.auratus made a shuttle migration between tidal and intertidal drive-by food performance. Ornamental species P. latipinna and invader species H.leciscuius both made a noticeable seasonal migration between subtidal and intertidal zones, affected water temperatures and food availability. Most of these species express seasonal migration to the intertidal zones from subtidal and tidal zones and visa versa. Significant factors affect zonation patterns, including food availability, protection from predators, spawning site, and avoiding seasonal temperature fluctuations.

} }