That is pretty good weight for two year old Indian stars. If they were 50 grams and heavily pyramided, I'd be worried. 170 grams? You should be good to go.That makes sense. Male is from Kenan Harkin and female is from tortoise supply. She has had them from hatchlings and they have very smooth growth. The only thing I wasn't sure about was weight. She said they are 170 grams. Seemed a little low but I have little experience with stars. My star I got as a hatchling at 21g is now 44g at 2 months old.