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Self-feeding systems allow fish to freely express feeding activity. A simple rod at the water surface can act as a trigger and provide fish with a way of obtaining pellets from a feeder. Such a rod presented to experienced European seabass, Dicentrurchus Zubran, may lead to feed wastage, probably as a result of unintentional fish contacts with the trigger.(More)
Three practical isoproteic (54% protein) diets were formulated to contain graded levels of crude fat (diet L: 10%, diet M: 20% and diet H: 30%). Each diet was assigned unrestrictedly to three and restrictedly to two replicate groups of fish (IBW 243 g). In unrestricted groups, increasing the dietary lipid level led to a significant decrease in voluntary(More)
In fish, dietary digestible energy (DE) content is a major factor controlling feed intake. It was therefore of interest to determine how circadian rhythm of feeding activity is influenced by the dietary DE levels. To that end, groups of European sea bass were fed on demand by means of self feeders, under light-dark and constant light conditions, with a(More)
Mimesis is a relatively widespread phenomenon among reef fish, but the ontogenetic processes relevant for mimetic associations in fish are still poorly understood. In the present study, the allometric growth of two allopatric leaf-mimetic species of ephippid fishes, Chaetodipterus faber from the Atlantic and Platax orbicularis from the Indo-Pacific, was(More)
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