The artificial reef was formed by random
placement of 1,000 half-metre cubic blocks, made of pulverized-fly-ash,
in a heap, measuring 10m diameter at the base and 3m high. The reef
was deployed in December 1993 and monitored for three years.
1. Pulverized fly ash concrete was acceptable
as an artificial reef building material.
2. Recruitment patterns and succession of the epifaunal assemblage affected
by block orientation.
3. The deployed artificial reef did enhance abundance, biomass, diversity
and species richness of fish.
4. The artificial reef was an effective fish aggregating device and
will aggravate the overfishing problem in an open access system.
5. Artificial reefs for enhancement purposes should not be deployed
in open access environment.