Jars Inside Tanks?

[Betta_luver]

I tried putting a clear glass jar into one of my bettas tanks and he didn't see it and swam right into it He kept doing it so i just took it out

 

[matty101]

bettas may be cute but I guess aren't the smartest creatures on the earth I tossed in a little bridge and he lays ontop of it now sometimes, if he can, he'll swim under it, if he fits.