Originally Posted by acrylic51
Are the hares toxic if killed?
They are not, acrylic, and do a wonderful job on hair algae, but can pollute the aquarium pretty badly if they die in your tank and are left to decay overnight.
They also do not usually live without hair algae.
Like stated, all you need to do is find the source and eliminate it. If you need something live to take care of the problem, go with more snails, not a fish that commonly starves due to lack of food and rock.