There are 17 reservoirs and 9 irrigation reservoirs in Hong Kong. The Water Supplies Department closely monitors the water quality by means of physical, chemical, bacteriological and biological examinations of water samples taken at impounding reservoirs to ensure that ecological balance and good water quality in impounding reservoir are maintained. With their peaceful and scenic environments, the reservoirs are very popular fishing spots. Starting from 21 April 2022, they will be open all year round to public for fishing.
Exempted fish
Do not return the following exempted fish*, irrespective of size and number, into impounding reservoirs.
| Species | Name | Photo |
|---|---|---|
| Family Centrarchidae | ||
| Micropterus salmoides | Largemouth Black Bass |  |
| Family Channidae | ||
| Channa micropeltes | Indonesian Snakehead |  |
|
Family Cichlidae All Cichlidae spp. Examples |
||
| Coptodon sp. | Redbelly Tilapia |  |
| Hemichromis sp. | Jewelfish |  |
| Melanochromis sp. | Malawi Golden Cichlid |  |
| Oreochromis sp. | Mozambique Tilapia |  |
| Oreochromis sp. | Nile Tilapia |  |
| Vieja sp. | Redhead Cichlid |  |
| Heterotilapia sp. | Zebra Tilapia |  |
| Parachromis sp. | Jaguar Guapote |  |
| Family Butidae | ||
| Oxyeleotris marmorata | Marble Goby |  |
|
Family Loricariidae All Loricariidae spp. Examples |
||
| Pterygoplichthys sp. | Suckermouth Catfishes |  |
* According to the study of expert consultant, controlling the population of these fish could help the ecological balance of the reservoirs.