Originally Posted by bettaowner
This one Lfs
in my area sells eels in those tiny betta carriers rather than dedicating a tank to them
keeps some of its more escape prone fish in those too. That's probably why they do it. They keep any crays she sells in them too for the same reason - when they had a big, expensive blue cray loose in a tank, one of the owners found it dead in the far end of the lot the shop is on while he was cutting the grass. It had climbed out, slipped out the door, and made it quite a ways outside. They use big ones for bigger fish, though.