Invertebrates, physiochemical, wild animals and aquatic vegetation of Anambra River were assessed for the 2010-2011 flooding season using standard methods. A total of 109 taxa belonging to 15 orders and 20 families made up of 1406 individuals were collected from the basin. The dominant organisms were Hemiptera, 386 and Coleopterans, 337. Crustaceans were of 38% (±14) of the assemblage with 18-47% of these crustaceans considered as zooplankton. Insects comprised 51% (±13) of the assemblage. Gyrinus sp, Hydrophilus sp, Metadiaptomus traavenlsid, Velia sp, Lepesthestheria rubidgei, Nepa sp and Macrobranchium sp were the most abundant invertebrates species. The most abundant animal utilizing the basin was the Ardea cinerea with 22.2% occurrence and this was followed by Caprini sp., with 13.51%, and Varanus niloticus with 10.04%. The cations were dominated by magnesium (40-43%), followed by calcium (22.4%) and Sodium (22.2-22.6%) while potassium was the least cation in the sites. The distribution of invertebrate species could be attributed to invertebrate - plant association and to chemical factors such as ammonia, conductivity, dissolved oxygen and NO₃-N.It is concluded that low in invertebrate diversity at Anambra River may be induced by sewage and other domestic pollutant discharged in it.

This paper deals with a new approach of entomology with an economic outlook. Acridid (Orthoptera) biomass by means of its mass culture could be utilized as a non-conventional source of protein-rich feed supplement to chick rations and fisheries. Moreover, it could be encouraged for anthropogenic consumption as well. This paper advocates miscellaneous uses of insects, particularly grasshoppers, as feed ingredient and food source. The Acridid mass rearing, culture and management towards biomass production can establish economically. The mass culture procedure of Acridid is short-sketched with relevant information.