biting

Ok laugh, but seriously. My barbs have been relentlessly biting my bichirs on the cloaca. Even after being fed to satiation, they keep doing it! Im worried this is going to lead to injury and infection. I noticed it for the first time last night. Has anyone ever dealt with this? Do I need to get...

Hey guys, i need your advice. At the moment i keep in my main Tank 4 Polys. Name Gender Age Size Species A Male ~ 3 Years ~ 11" Polypterus Delhezi B Female ~ 3 Years ~ 11,5" Polypterus Delhezi Marty Male ~ 2,5 Years ~ 12" Polypterus Delhezi Würmchen Male ~ 1,5 Year ~ 12,5"...