Swordtail in community tank ?'s
I have 7 Danios, 5 Otos and 8 guppies in a 40 breeder (half of the guppies are fry) and I'm trying to decide on what fish to add next. I would love to add some swordtails but I really want to keep the peace and not add stress to any of the other fish.
Do swordtails tend to get aggressive? Do they fin nip? Can I safely keep about 7 without any issues?
Thanks for any info.