aggresive algae eater

Question
I have a 55 gal freshwater tank that we have had running for about 8 months.  We have 5 tetras, 7 zebra danios, about 16 mollies (9 or 10 adults and the rest babies) 1 algae eater and 1 male betta.  We  recently put the betta in to try and see if he could co-exist in the community tank.  The betta has left everyone alone and the other leave him alone except the algae eater.  He chases the betta and picks on him - I've seen it at least a few times a day.  The betta seems to be ok, no apparent injuries and he eats fine and he isn't hiding or anything.  My concern is that the algea eater will eventually stress him out too much or injure him.  Should I continue to allow the betta in the large tank and see if the algae eater eventually leaves him alone or should I move the betta to his own tank.  The betta is the only new fish in the tank, all the others were there before I got the algae eater.  Thanks, Catherine

Answer
Dear Catherine,
It could certainly be that because bettas are relatively slow movers and are always suceptible to any other fish that may pick on them that it could be why your Algae eater is chasing and picking on him. I have a bad feeling that perhaps your algae eater is the "Chinese algae eater" these are the most common algae eaters sold to the aquarium hobby and yes they do graze some algae, but they also have a bad reputation for pestering slow moving or even disc shaped fish for their slime coat! If you would like to see a picture of a chinese algae eater you can go here-
"www.aquahobby.com/gallery/e_Gyrinocheilus_aymonieri.php"

Chinese algae eaters tend to be aggressive as they grow larger and your betta could certainly be in danger. Of course the best thing you could do for him is to give him a inexpensive 10gal just for him or with a few peaceful tankmates. This is the best setup for a male betta.

I'm not sure if I would risk leaving the betta in there. I've heard quite bad stories about Chinese Algae eaters pestering fish to the end by rasping with their sucking mouths. They have been know to attack even "aggresive" cichlids before. Your other fish may be safe because they are quicker moving and there are no elaborate fins to nibble on in your Danios, Tetras, and mollies. But I would just watch out! Unfortunately most aquarists have to give up their Chinese algae eater as he grows larger if they want a peaceful aquarium.
I'm very sorry.

I hope this helps! Best of luck!
Best wishes,
Karen~