So I bought these little 1 inch caes at my lfs and then I did some reasearch!!! they get upto ten inches!!!!!! So my question is if they don't hve enough room to grow will they??
Yes they will, and they'll do it rather fast. They can get real nasty too, I took mine back when it started to kill my other fish. They are evil!! EVIL! (My opinion) Some people here love them though.
CAE's have sucker mouths and their stripe isn't so distinct. That pic looks like a Siamese algae eater.
Site on telling them apart http://www.thekrib.com/Fish/Algae-Eaters/