Small-size marble goby fingerlings (0.26–4.18 g) were supplied with 200 small-size and 200 medium-size prawns per
aquarium, while large-size marble goby fingerlings (10.21 g) were provided with 150 prawns from each of the three prawn
size groups per aquarium, giving a total of 450 prawns per aquarium. Each observation was replicated 3 times during five
consecutive days.