what ones stay small besides the bristle-nose? perferably not carnivors... thansk!

good thing i didn't buy it. well, i may buy it, but only if i can make living arrangements for it. the stupid petstore people told me it would only get about 6 inches.... of course, they'll say anything to make a buck!

i saw one of these at the petstore, but they couldn't answer me when i asked how big it would grow. i've found information on "chocolate pl*co" but no the albino chocolate one. are they different? the one at the petstore was light brown and kinda had spots on it's 'nose'. thanks!