I recently purchased a 75 gallon tank from a guy and 2 oscars came with it. One is 9" and the other is 11-12" long (About 3 years old). The question is, are they ever satisfied? They go ape everytime I am near the aquarium as if I have been starving them yet I seem to feed them a ton. Is this normal behaivor, about how much should I feed these guys at one time? I read the sticky that suggest a mature oscar should be fed once (5 minutes worth of eating) but they jsut stare at the top of the water all day as if food is gonna drop any second. Very funny fish but I want to make sure these two are happy.