tiny fishes swimming on a small rush of water flowing on wet mud in a rice field

tiny baby fishes water wet mud rice field swimming group fish small growing plants organic agriculture plant freshwater soil nutrients fertility earth worm earthworm move agricultural rich humus improve structure paddy worms poop castings wormcastings compost nature natural environment dirt dirtied ground brown background environmental biology macro healthy sustainability fauna biological fertilizer wildlife growth scene green asia scenic life farmland juvenile fresh surface young transparent swim ecosystem flowing worm's activity