Moved to the proper forum for ya....but the only turtles I can recognize at a glance are sliders...so the only helpful thing I can offer is that those aren't sliders.

I can offer this bit of advice, though. My sister has a red-ear slider that she's had for years...since it was the size of a quarter. She learned that feeding them in their own tank just makes a HUGE mess and gunks up the filters awfully fast. She has a simple plastic tub that she puts a couple inches of water in...places the turtle in the tub...and feeds it in there. When it's done eating, she simply plops it back into its tank and cleans up. The water in the tank stays clean and balanced for a very long time this way.