"i use this as a holding tank for when im cleaning out my dwarf hamsters' home. its great that i can see thru them clearly. its not easy for the hamsters to escape from & believe me, they've tried. very light to carry.
also great to use as a carrying case for quick trips to the vet. i have one that has a punchout where i put in their waterbottle. its the perfect temp home for my dwarfs.
I've used this for bettas as well. very spacious & cheaper than glass tanks for fishes."