Plants and algae mostly.
fish could eat as a producer, seaweed, or the small greenery on the side of the water that your fish is in.
Plankton do not eat fish. This is because plankton are normally producers meaning they produce their own food. Normally fish eat plankton.
No. Even small fish eat plants, and are thus consumers. Small fish can eat everything from seaweed to algae.
Fish in the ocean eat algae, sea grasses, and mangroves. Those are all producers
Jellyfish eat a large variety of things including small plants, copepods, fish larvae, fish eggs, plankton eggs and even other jellyfish. Several of these are producers.
The consumers would die of starvation.
Various insects eat water lilies. Fish nibble on the leaves. Beaver and muskrat eat the stems and leaves.
Producers that they eat are algae
A producer is an organism that makes food from light energy. Do dolphins sit in the sun and make food? No, they eat fish and other living things, so they are consumers.
Consumer. Things that eat are consumers, things that do nothing but provide food are producers like plants.
Some producers are seagrass, algae, moss, grass, etc. Some animals that eat these producers are the great white shark, manatees, whales, dolphin, fish, etc.
Well, that is kinda hard to explain. Because, a prey can be a predator, and a predator can be a prey. That is because of food chains. For an example, a small fish might eat a plankton, and a squid might eat the fish, and a octopus might eat the squid, and a shark would eat the octopus, and a fishermen might kill and eat the shark. The small fish was a predator that ate the plankton, but then the fish became a prey, because the squid ate it. It is impossible for a animal to be JUST a prey/predator unless they don't eat animals.