Join Date: Jun 2010
Location: Jakarta, Indonesia
My experiences have been proven "different" - what was safe for me in a 13-50g tanks apparently could have been lethal. I suppose I have been lucky. So I dare not say which tank mates are safe.
Tank sizes have never been the cause of tail biting in my tānks. Mine began in 1g solitary bare tanks. And continued after moved to bigger tanks. Though I have only had very few tail biters, but I truly believe tank mates is the best option. . . . Just for comparison/consideration - I used female bettas, female guppies, and/or cardinals. But don't take my word for it because I've read people having problems with those tānk mates.