A top feeder is easy to differentiate from a bottom feeder because of there mouth bottom feeders will also suck things in the tank. You can tell the difference between a middle and a top feeder because of where they swim most of the time like cardinals and angel fish.
It doesn't matter if they are bottom feeders! If ya smell what the rock-fish is cooking!
generally a special formulated fish food is sprinkled on the top of the water, and the fish will come to the surface and eat. there are also automated feeders for large tanks.
If the fishes are not vicious, the feeders survive and grow up if they are goldfish feeders or feeders from the rejected broods of some cichlids. If they are guppy feeders they are either stressed to death or eaten.
in fish
Jawless fish are filter-feeders.
Tuna fish are not filter feeders. Tuna usually eat surface fish, or even lancetfish. They may also eat other tuna.
Saltwater Fish
Top feeders are animals that occupy higher trophic levels in a food chain or web and typically prey on other animals. Middle feeders are animals that occupy intermediate trophic levels in a food chain or web and feed on both producers and consumers, thus playing a crucial role in energy transfer within ecosystems.
It works
Jawless fish are filter-feeders.
Don't realy know?
Mahi mahi is a type of tuna. Tuna are large, carnivorous fish. Bottom feeders are fish or other animals that eat organic debris and waste, so tune fish are not considered bottom feeders.