I used to have a tank in my bedroom, rather small tank, but a tank nonetheless, and I kept a male siamese fighting fish in it, beautiful fish.
I felt as much for that fish as I now do for my 2 ferrets :-)
if you fancied being a daredevil I guess you could lift the front wheel up slightly as you drop in, then jump the rear wheel, effectively bunny-hopping into the top of the ramp and dropping in that way :-)