I agree that chinese algae eaters and clown loaches simply grow too big for a 10gal, best to rehome them ASAP as both can grow to 12inches given time(chinese algae eaters usually grow about an inch a month until they are 8inches long, where their growth will slow down, but can eventually grow anything between 10 and 15inches long). CAE's are known for their agressiveness despite being primarily vegetarian fish, although they can be quite peaceful when small, they often turn into agressive horrors as they mature and will attack virtually all types of fish.