Most larger fish are predator types, feeding on a range of foods such as other fish, crustaceans, mollusks, etc. Some rely solely on vegetative matter such as algae and plants. Some require or prefer both.
yabbies or larger fish
by larger fish that eat smaller fish
It would depend upon the size of the fish. Small fish probably eat plankton. Larger fish eat smaller fish. Some fish eat invertebrates.
if they can kill it they will eat it
Many fish are carnivores, which means they eat other animals. They attempt to survive, and to live, they must eat. Many larger fish eat smaller fish as a part of their diet.
Seals eat fish. If sardines are where a seal could get them, they would- but would rather have larger fish.
Plankton are eaten by filter feeders such as clams, as well as by small fish. Larger fish would be looking for something larger to eat. Plankton are extremely small.
Yes, raccoons will eat minnows as well as larger fish.
barracudas eat smaller fish but will atack larger pray by ripping of chunks until it is all gone!
larger fish, such as salmon. Dolphins and whales also eat them.
All dolphins are carnivores. Small dolphins eat fish and squid while larger dolphins eat larger animals.
crabs, larger fish, and man that catch them to eat