Every weekend, Ho'omaluhia Gardens offers catch and release fishing, and is a perfect opportunity for young kids learning about fishing.
Ho'omaluhia Gardens has bamboo fishing poles available (they are first come first serve, but I was told they rarely run out). If you bring your own pole, it should be barbless (barb pinched down). You will need to bring your own bait - we used white bread and had great luck catching a variety of fish (live bait is not allowed).
Fishing is available from 10am - 2pm every Saturday and Sunday. The lake at Ho'omaluhia has a variety of fish including tilapia, cichlids, smallmouth bass, grass carp, and channel catfish.
The fishing area is a 15 - 20 minute walk from the visitor's center and parking area. There are several shady spots around there - perfect for a picnic when you need a break from fishing (parts of the walk are not shaded so you will want to bring sunscreen and bug spray).
For more information: Recreational Freshwater Fishing--Ho'omaluhia Botanical Gardens