I think it would work too. And as Monya said, as long as they're hungry.
To a point I guess obese fish can happen, some of mine I thought were obese but the slimmer species are, well, slim
Smaller more frequent feedings with a bit of water flow for them to swim in would be a way to train your fish up like athletes hehe. Dunno if you can make fish meat tough or not, age????
If fish are fighting fit they will easily eat more. This will make more wastes without having fat fish. I think...
Humans in training to improve muscle mass (protein) and lose fat, are actually taught to eat 5 or 6 times a day as opposed to three. These meals are smaller than your average 3 a day type meal, but overall more food. Adding training, humans burn the carbohydrate portion of diet and muscle tissue is kept intact, and will grow, provided protein is regularly supplied in the diet. This constant feeding teaches the body to burn carbohydrates and fats rather than store them, a metabolic shift in the system resulting in more efficient food processing. The body seems to 'know' it will get fed again.
The third part of diet and exercise, considered crucial but rarely ever mentioned, is rest.
A theory
- feed your fish regularly as clockwork 4 times per day with an automated feeder set so they get a little more (20 - 30%) than what they'd normally get in 1-2 meal days.
- Feed comes from beside your water return, so fish begin to jostle for position in the flow around feeding time (and feed is better dispersed for those runts)
I theorise the fishes clocks will soon take to swimming in the flow, then feeding, then resting, then swimming in the flow...
And hopefully, they'll grow faster and poo more.
