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Citizen Scientist, Mr Tang Hung Bun, records the fish in our natural swimming pond to check their health. He feeds them a little food (the only external food they get) and then records footage of how they react (Permaculture Principle 1: Observe & Interact). You can see how lively they are, this means that they are healthy.

Here you can see:


We also have Siamese Cleaning Fish that clean algae off the sides of the pool, Guppies that eat their own body weight in mosquito larvae, Ghost Shrimp and Red Cherry Shrimp that clean debris from the bottom of the pool, and even Snails that clean algae from the underwater plants.

There are other fish in there too, all with a specific purpose in the natural swimming pool ecosystem – can you spot them?