Document Type : Original Article


1 Department of biodiversity and ecosystem management, Institute of environmental sciences research, Shahid Beheshti University, Tehran, Iran

2 Assistant Professor, Department of Environmental Sciences, Faculty of Sciences, University of Zanjan, Iran,


This study evaluated Length-Weight Relationships (LWRs) and condition factor (K) of the juvenile and young adult fish from shallow littoral zones in some aquatic ecosystems located in Khuzestan province, Iran. In June 2015, the specimens were sampled using a seine net from the Shadegan Wetland, the Dez, and the Karkheh Rivers in the time period of increased juvenile recruitment. The LWRs of fish were calculated using linear regression log formula as log W=loga+blogTL, and the K estimated using K=W/L3. A total of 18 species belong to 5 families collected in the stations. Exotic species comprised 33.33% of the total ichthyofauna. The variation of b-value ranges between 2.65 and 3.26, and the growth pattern is isometric in all species except Acanthobrama marmid. Since the amount of K was higher than one in all species, it can be concluded that the sampling stations are favorable for the growth of the fish.  As a consequence of the decreased floodplain habitats in the surrounding of the water bodies, the shallow waters of littoral zones that have suitable features for the juvenile fish can play an essential role in the survival of the native fish fauna.


Aazami J., Esmaili-Sari A., Abdoli A., Sohrabi H., Van den brink P.J. 2015. Length-weight relationships of 14 fish species from Tajan River, Southern Caspian Sea basin, Iran. Iranian Journal of Ichthyology 2(4): 299-301.
Abdoli A. 2000. The Inland Water Fishes of Iran. Iranian Museum of Nature and Wildlife. Tehran. [In Persian with English abstract]
Abdoli A. 2016. The field guide of the inland water fishes of Iran. Iran-shenasi. Tehran. [In Persian]
Akhani H. 2015. Iran's environment under sieg. Science 350(6259): 392-392.
Anene A. 2005. Condition factor of four cichlid species of a man-made lake in Imo State, Southeastern Nigeria. Turkish Journal of Fisheries and Aquatic Sciences5(1): 43-47.
Asadi H., Sattari M., Motalebi Y., Zamani-Faradonbeh M., Gheytasi A. 2017. Length-weight relationship and condition factor of seven fish species from Shahrbijar River, southern Caspian Sea basin, Iran. Iranian Journal of Fisheries Sciences 16(2): 733-741.
Başusta N., Çiçek E. 2006. Length-weight relationships for some teleost fishes caught in Ataturk Dam Lake on southeastern Anatolia, Turkey. Journal of Applied Ichthyology 22(4): 279-280.
Bowen Z.H., Bovee K.D., Waddle T.J. 2003. Effects of flow regulation on shallow-water habitat dynamics and floodplain connectivity. Transactions of the American Fisheries Society 132(4): 809-823.
Bunn S.E., Arthington A.H. 2002. Basic principles and ecological consequences of altered flow regimes for aquatic biodiversity. Environmental management 30(4): 492-507.
Chick J.H., Mclvor C.C. 1994. Patterns in the abundance and composition of fishes among beds of different macrophytes: viewing a littoral zone as a landscape. Canadian Journal of Fisheries and Aquatic Sciences 51(12): 2873-2882.
 Coad B.W. 2015. Freshwater Fishes of Iran. Available from: Retrieved on 19 November 2015.
Coad B.W. 2017. Freshwater Fishes of Iran. Available from: Retrieved on 20 March  2017.
Coad B.W., Hussain N.A. 2007. First record of the exotic species Hemiculter leucisculus (Actinopterygii: Cyprinidae) in Iraq. Zoology in the Middle East 40(1): 107-109.
Froese R. 2006. Cube law, condition factor and weight-length relationships: history, meta‐analysis and recommendations. Journal of Applied Ichthyology 22(4): 241-253.
Hammer Ø., Harper, D.A.T., Ryan, P.D. 2001. PAST: Paleontological Statistics Software Package for Education and Data Analysis. Palaeontologia Electronica 4(1): 9pp.
Hashemi S.A.R., Ansary H. 2012. Biomass and production of fish species in the Shadegan wetland, Iran. Global Veterinaria 9(2): 123-128.
Lewin W.C., Okun N., Mehner T. 2004. Determinants of the distribution of juvenile fish in the littoral area of a shallow lake. Freshwater Biology 49(4): 410-424.
Li Q., Xu X., Huang J. 2014. Length–weight relationships of 16 fish species from the Liuxihe national aquatic germplasm resources conservation area, Guangdong, China. Journal of Applied Ichthyology 30(2):434-435.
Loureiro S., Mourão Júnior M., Giarrizzo T. 2017. Length-weight relationships for seven fish species from Marajó Bay, Amazon estuary, northern Brazil. Journal of Applied Ichthyology 33(3): 620-622.
Mitsch W.J., Cronk J.K., Wu X., Nairn R.W., Hey D.L. 1995. Phosphorus retention in constructed freshwater riparian marshes. Ecological Applications 5(3): 830-845.
Mohammadi M., Askary Sary A., Khodadadi M. 2012. Accumulation Variations of selected heavy metals in Barbus xanthopterus in Karoon and Dez Rivers of Khuzestan, Iran. Iranian Journal of Fisheries Sciences 11(2): 372-382.
Poff N.L., Allan J.D., Bain M.B., Karr J.R., Prestegaard K.L., Richter B.D., Sparks, R.E., Stromberg J.C. 1997. The natural flow regime. BioScience 47(11): 769-784.
Schiemer F., Spindler T., Wintersberger H., Schneider A., Chovanec A. 1991. Fish fry associations: important indicators for the ecological status of large rivers. Internationale Vereinigung für theoretische und angewandte Limnologie: Verhandlungen 24(4): 2497-2500.
Valikhani H., Abdoli A., Kiabi B.H., Nejat F., Sadeghsaba M., Khosravi M. 2018. A study on the status of invasive tilapia species (Coptodon zillii Gervais, 1848 and Oreochromis aureus Steindachner, 1864) in the aquatic ecosystems of Khuzestan province, Iran. Environmental Sciences 15: 29-44. [In Persian with English abstract]
Wilson M.A., Carpenter S.R. 1999. Economic valuation of freshwater ecosystem services in the United States: 1971-997. Ecological Applications 9(3): 772-783.
Zareian H., Esmaeili H.R., Zamanian Nejad R., Vatandoust S. 2015. Hemiculter leucisculus (Basilewsky, 1855) and Alburnus caeruleus (Heckel, 1843): new data on their distributions in Iran. Caspian Journal of Environmental Sciences 13(1): 11-20.