I had bought a 55 gallon and tried to use DIY dividers in it for 8 bettas. Well, apparantly they aren't as snug as I thought they were b/c this one Thai import (beautiful white boy with a little blue wash on his fins) tore up my turquoise boy. That he was next to.
I started to get new tanks ready for everyone, with much more secure dividers - you see the problem with the 55 is that it is so tall, it was very difficult to work with each divider when the previous one was in place.
So I started getting my spare tanks ready, divided in 3, much more secure this time b/c they are not hard to work with. Made sure each divider was snug to the glass.
Well tonight I'm goning to feed the boys in the 55 - I should have taken them all out and jarred them while waiting for the other tanks to be done ... my beautiful copper/red rosetail is just torn to SHREDS! The white boy was in the rosetail's section, and the rosetail was in the white boys!!! His entire anal fin is gone.
I have just jarred the nawty white boy so he can't hurt anyone else - he will be staying jarred or I will get him his own tank. I have never ever had a betta so aggressive before!! The rosetail is in his own 2.5 gallon clean tank with heater set to just above 80, and will be getting daily water changes. He has scales missing as well. I just want to cry