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Background Four central Sahara mountainous massifs provide habitats for relict populations of fish. In the Adrar of Mauritania… Expand Length-weight relationship (LWR), condition factor (K) and stomach content of three cichlid fishes (Hemichromis bimaculatus… Expand Fish is known to be one of the cheapest sources of animal protein and other essential nutrients required in h uman diets (Sadiku… Expand 2 Abstract: This paper provides information on the diets of Oreochromis niloticus and Sarotherodon galilaeus in Ero reservoir… Expand In 1994, tilapia (Oreochromis mossambicus and Sarotherodon melanotheron) in wild and farmed populations on Oahu, Hawaii, USA… Expand Maynard Smith (1977) provided the first game-theoreticalmodels of parental care. In his Model 2, Maynard Smithassumed that each… Expand The black-chinned tilapia (Sarotherodon melanotheron) is a paternal mouthbrooder. Pairs of adult black-chinned tilapia were… Expand Evolutionary theory predicts that differences in parental care patterns among species arose from interspecific differences in the… Expand Abstract Operational sex ratio (OSR) theory predicts that sexual differences in potential reproductive rates (PRRs) create biases… Expand The long-term (22 yr) record of primary production in Lake Kinneret, Israel, has been examined, together with chlorophyll and… Expand