Lettuce to slug to duck to fox
duck weed, fish, raccoons
snail
fish eat algae and bigger fish like sharks eat the fish
a water food chain der
they may not have food
food chain in pond: Algae -->Protozoa-->Small Fish --> Big fish
Goldfish and bettas (fighting fish) are freshwater fish, so they are not part of the ocean's food chain at all. In a freshwater environment, they are relatively low on the food chain.
The step would be the food chain. In this case the big fish is at the top of the food chain and the algae would be at the bottom.
What is the herbivore in the following food chain: algae → fish → herons?
fish
they have duck tail fish
Fish and fish eggs.