i have hillstreams but not in a shirmp tank. they are an algae loach and i dont see how they could eat a shrimp really with them being flat like they are. i never can find them in the big tank when i want to move them to the shrimp tank but im thinking they would be ok.
mine have never taken any kind of food other than veggies or algae waffers even when i smash snails or put brine shirmp in they dont mess with them just clean the glass and i think they like cooler temps too if i remember right so they would work well in shrimp tanks. now time to find a net and camp out infront of the 55 for a few hours lol