There is no way to accurately define the "best" bottom feeder. There are so very many bottom feeders. The way to decide which species you want, is to work out what conditions you want the fish to thrive in and then get fish that fit those conditions. For my conditions I chose Corydoras sp.
is whiting a bottom feeder
No, the Swai Fish is not a bottom feeder fish, but they do have a vegetarian diet.
Get a 7 day feeder(:
It really depends on the species of bottom feeder and how it's cared for.
That depends on what species the bottom feeder is. There are very many species of fish that are bottom feeders.
No
No
Anything labeled safe for aquarium use. Beyond that, it depends on what type of fish you are keeping, and whether or not you have plants, for which type of aquarium substrate (gravel or other lining for the bottom) should be used.
No
yuppp
i say yes