Hatchlings - feed daily.
Adults- feed every 2nd day
Feed your turtle an amount of food equal to the size of its empty head. Freely feed greens as often as you like. If it's not hungry, it's probably being over-fed so cut back a little.
O2 weed, watercress, duckweed, waterlily leaves and other Aquatic plants are best. Puha (sow thistle) and dandelion leaves. Fancy lettuce varieties,(NOT iceberg), mesculin salad, carrot sticks , Kumara peelings and flesh.
Water-snails, worms, insects, pellets, fresh and dried fish, feeder fish, whitebait, commercially prepared food e.g. 'Hot-House'frozen turtle food. Turtles need a varied diet. DON"T feed the frozen "turtle dinners". They are full of fat and other things turtles can't digest...they will eventually lead to illness or death.
DON'T feed any red meat, cabbage, spinach, silverbeet, rhubarb, beets, celery, broccoli, mince, dog/cat food, raw chicken, salty fish, brussel sprouts or avacado. These lead to vitamin deficiency, an inability to absorb calcium,(essential for bone strength and health), and even death.
NOTE: The dietary requirements for the eastern long-neck turtles is different to the RES as they require far more live fish, snail, insects etc and dont eat pellets, veggies/greens. Check out the Australian freshwater Turtles website/forum for information on the care of your long-neck turtle..