Note: This is a follow-up to this post.
When contacted, the Botanic Gardens explains that the manhandled fish were actually fish being transferred from overpopulated areas to more suitable ponds.
In response to the complaint, a Botanic Gardens spokesman told Stomp:
"The Singapore Botanic Gardens actively monitors the health of the ecosystems.
"The exercise on March 5 was part of our programme to catch and transfer fish from overpopulated areas to other waterbodies in the Gardens. The fish shown in the picture is now adapting well in another pond."
Now we know! And knowing is half the battle.