That depends on what species the bottom feeder is. There are very many species of fish that are bottom feeders.
A bee guard for a hummingbird feeder looks like a trough of water. The trough looks like a circle around the top of the feeder.
Sea anemones are often bottome feeders, eating anything that comes their way. Many species look more like flowers than the animals they are.
What do koi eggs look like?
It depends it can be many types of shapes.
they look almost like A little bush. its a bunch of round eggs all tied up together at the bottom of the tank or at the bottom of where ever they are.they are all connected to a little piece and spread out like a bunch of balloons wrapped in a little girls hand.
They are just guppies that are not quite as pretty as others.
Minnows, freshwater frogs and snails, maybe a bottom feeder but I would look into that one a bit more.
those are ladybug eggs! be sure to leave them to hatch, they are an organic aphid control! the young ladybugs will look like black alligators before they mature into the classic ladybug look.
They are small round eggs that look like deer scat
They are round clear jelly like eggs
They look like normal bird eggs but a little smaller.
A bottom looks like a bottom it is just that simple