Food and Agriculture Orgnization (FAO), African Fisheries and the Environment: in Food and Agriculture Organization of the United Nations, Italy, 1991.
 J. Elkington, “Beware of the Wrath of Dsiris,” New Science, Vol. 68, 1975, pp. 626-268.
 R. L. Welcome, “River Fisheries,” FAO Fisheries Technical Paper, Vol. 262, 1985, pp. 330.
 Food and Agriculture Organization (FAO), “Role of Fisheries Technology in Development of Inland Floodplain in Africa,” In: Symposium on River and Floodplain Fisheries in Africa, CIFA Technical Paper, No. 5, 1988, pp. 12-18.
 Food and Agriculture Organization (FAO), Training for Agriculture and Rural Development, Rome, 1986.
 B. D. Olaosebikan and A. Raji, “Field Guide to the Nigerian Fresh Water Fishes,” Federal College of Freshwater Fisheries Technology, New Bussa, Nigeria, 1998.
 Federal Department of Fisheries, Presentation on the Fisheries Sub-Sector at the Presidential Forum, Abuja, 2003.
 D. M. Jamu and O. A. Ayinla, “Potential for the Development of Aquaculture in Africa,” NAGA, Vol. 693, 2003, pp. 9-13.
 R. P. King, “New Observations on the Trophic Ecology of Liza Grandisquamis (Valenciennes, 1836) (Pisces: Mugillidae), in the Bonny River, Niger Delta, Nigeria,” Cybium, Vol. 12, No. 1, 1988, pp. 23-36.
 P. M. Rosenberg, H. V. Danks and D. M. Lemhkyhi, “Importance of Insects in Environmental Impact Assessment,” Environmental Management, Vol. 10, 1986, pp. 773-783.
 N. S. Clair, L. M. Perry and F. P. Gene, “Chemistry for Environmental Engineering and Science,” 5th Edition, Mcgraw-Hill, New York, 2003.
 Federal Environmental Protection Agency, Our National Environmental Goals, Special Publication No.3, Lagos, 1989.
 E. O. Ita, “Inland Fisheries Resources of Nigeria,” CIFA, Food and Agriculture Orgnization, Rome, 1993.
 I. A. Butt, Report on the Industrial Pollution of Jakara Dam. Ministry of Health, Kano State, Nigeria, 1985.
 H. A. Adeniji and I. G. Mbagwu, Study of Physico-Chemical Characteristic of Some Heavy Metals in Jankara Reservoir, NIFFR Annual Report, Kano State, 1990.
 E. O. Anko and A. A. Eyo, “Fisheries Department, Ministry of Agric. Nigeria with Special Reference to Cross River State,” Abstracts of the 17th Annual Conference of Fisheries Society of Nigeria (FISON), 2001.
 American Public Health Association, Standard Methods for the Examination of Water and Waste Water, Washington D.C., 1987.
 M. Elvira, “Taxonomic Revision of the Genus Chondrostoma Agassi 1835 (Pisces: Cyprinidae),” Cybium, Vol. 11, 1987, pp. 111-198.
 F. Erk’akan, T. T. Nalbant and S. C. Ozeren, “Seven New Species of Barbatula Three New Species of Schistura and a New Species of Seminemacheilus (Ortariophysi: Balitoridae: Nemachellinae) from Turkey,” Journal of Fisheries International, Vol. 2, 2007, pp.69-85.
 G. G. Teugel, “Prelimnary Results of Morphological Study of Five African Species of the Subgenus Clarias (Pisces: Clariidae),” Journal of Natural History,Vol. 16, 1982, pp. 439. doi:10.1080/00222938200770351
 W. Fischer, M. Schneider and M. L. Bauchot, “Mediterranee et Mer Noire Zone De Peche 37,” Revision 1, Volumn II, Vertebres, Rome, 1987.
 D. Pauly, “Fish Population Dynamics in Tropical Water: A Manual for Use with Programmable Calculators,” Iclarm Studies and Reviews, Vol.8, 1984, pp.325.
 J. A. Zar, “Biostatistical Analysis,” Prentice Hall, New Jersey, 1984.
 W. E. Ricker, “Computations and Interpretations of Biological Statistics of Fish Populations,” Bulletin of the Fisheries Research Board of Canada, Vol. 191, 1975, pp. 201-210.
 V. O. Sagua, “Aquaculture and Fisheries Development in Nigeria,” The 12th Annual Conference of Agriculture Society of Nigeria, University of Ife, 1979.
 A. C. Simpson, “The Fecundity of Plaice,” UK Ministry of Agriculture and Fisheries, Fisheries and Food Investigation, Vol. 217, 1951, pp. 3-27.
 T. B. Bagenal, “Age and Growth,” In: T. B. Bagenal, Ed., Fish Production in Freshwater, Blackwell, Oxford, London, 1978, pp. 120-128.
 V. L. DE Vlaming, “The Effect of Temperature and Photoperiod on Reproductive Cycling in the Estuarine Gobiid Fish (Gillichthys mirabilis),” Fishery Bulletin, Vol. 73, 1982, pp. 1137-1157.
 A. M. A. Imevbore, “Some preliminary observation on the sex-ratio and fecundity of the fish in River Niger,” In: S. A. Vissar, Ed., Kainji—A Nigerian Man-Made Lake, NISER, Ibadan, 1970.
 P. B. Bayley, Caracteristicas de inundacion de los rios y areas de Captacion en la Amazonia peruana. Inf. No. 81 Institute del mar del peru (IMARPE), Peru, 1981.
 P. McCully, “Silenced Rivers: The Ecology and Politics of Large Dams,” Zed Books Ltd., 1996.
 T. Bhukaswan, “Management of Asian Reservoir Fisheries,” FAO Fisheries Technical Paper, Vol. 207, Rome, 1980.
 W. A. Evans and J. Vanderpuye, “Early Development of the Fish Populations and Fisheries of Volta Lake,” Geophysical Monograph, Vol. 17, 1973, pp. 114-120.
 E. K. Balon and A. G. Coche, “Lake Kariba, a Man-Made Ecosystem in Central Africa,” Monographiae Biologicae, Vol. 24, 1974, pp. 767.
 T. Petr, “Hydrobiology and Fisheries Problems of the Nyumba ya Mungu Man-Made Lake in Tanzania,” The African Journal of Tropical Hydrobiology and Fisheries, Vol. 4, No. 1, 1975, pp. 39-50.
 T. Quarcoopome and F. K. Y. Amevenku, “Fish Fauna of the Weija Reservoir—28 Years After Impoundment,” CSIR-WRI Technical Report, 2006.
 M. Abhijit, “Origin and Evolution the Deep-Sea Fauna,” Journal of the Indian Ocean, Vol. 5, pp. 251-253.
 P. A. Large, P. Loranze and J. G. Pope, “Survey Estimates of the Overall Size Composition of the Deep-Sea Fish Species before and after Exploitation,” ICES, Center for Environment, Fisheries and Aquacultural Sciences, Lowesoft, U.K., 1999.
 R. J. Wooton, “The Effect of Size of Food Ration on Egg Production in the Female Three-Spined Stickleback, Gasterosteus Aculeatus,” The Journal of Fish Biology, Vol. 5, 1979, pp. 89-96.
 R. P. King, O. M. Udodiong, E. C. Ekwali and N. A. Nkanta, “Some Aspects of the Trophic Biology of Iiisha Africana (Teleostei, Pristigasteridae) in Qua Iboe Estuary, Nigeria,” African Journal of Ecology, Vol. 105, 1991, pp. 261-274.
 E. R. Akpan, “Seasonal Variability in Phytoplankton Biomass in Relation to Physico-Chemical Changes in the Cross River Estuaries of Eastern Nigeria Ph.D Thesis,” University of Calabar, 1994.
 G. A. Rounsefell and W. H. Everhart, “Fishery Science, its Methods and Applications,” John Wiley and Sons Inc., New York, 1957.
 T. K. Pitt, “Fecundity of American Plaice, Hippoglossoides Platessoides (F) Fromgrand Bank and New Found Land Areas,” Journal of the Fisheries Research Board of Canada, Vol. 21, 1964, pp. 507-512.
 F. Nagasaki, “The Fecundity of Pacific Herring, Clupea Pallasi, in British Columbia Coastal Waters,” Journal of the Fisheries Research Board of Canada, Vol. 15, 1958, pp. 313-330.
 S. S. E. Palacious, Estudio biologico pesquero de la tilapia Oreochromis aureus (Steindachner, 1864) en la Presa Benito Juarez, Oaxaca, Mexico, en 1993, Ciencia Pesquera, No. 11, 1995, pp. 54-61.
 B. J. Shuter, J. A. MacLean, F. E. J. Fry and H. A. Regier, “Stochastic Simulation of Temperature Effects on First- Year Survival of Small-Mouth Bass,” Transactions of the American Fisheries Society, Vol. 109, 1980, pp. 1-34.
 F. E. Asuquo, E. E. Ntekim, A. O. Eja, A. O. Ekwu, O. O. Ogri and E. S. Bassey, “Post Impact Assessment of Cross River Coastal Areas Affected by Mobil (Idoho) Oil Spillage,” Report submitted to Cross River State Government, 1998.
 W. O. Odiete, Environmental Physiology of Animals and Pollution, Diversified Resources, Lagos, 1999.