What is the significance of green plants in fish life?

1) Enrich the water with oxygen,
2) eggs are laid on plants, nests for shelters are built from algae (stickleback), they live among plants,
3) food for herbivorous fish,
4) during mass reproduction in small ponds can lead to the death of fish,
5) some aquatic predatory plants (for example, pemphigus) feed on fish fry, their eggs.

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