uzairi... sorry to ask some basic Qs... i've read about feeding fish in most forums... mind to tell what kind of fish are they?

or izzit just any kind of small fishes are considered feeding fish?

yup tortoise can be overweight and eats anytime. what kind of tortoise are you referring too? what's the diet?
i think got some caresheets on the 1st page of this thread. by the way, as you're still using those round plastic containers, i presume the turtles are still small. how can you be sure of the sex?

filter is a must unless you're willing to frequently change the water, as res eats and poops a lot. uv is also a must unless the turtles are housed outdoors or being frequently exposed to sunlight.

and how often do you go back to hometown? 

RES are turtles, not tortoise fyi. 

Anywhere between 7-9 inches for Male and 9-12 inches for Female 

But most no longer than 11 inches

Weight wise depends

Cheers