Page 307 - Trends in Science and Technology fo Sustainable Living

268 Fakultas Sains dan Teknologi
Universitas Terbuka (2023)

fish and lowering formulated feed costs could be an added benefit
that keeps tilapia pricing competitive with other wild and farmed
species (Fitzsimmons, K.M., Martinez-Garcia, R., & Gonzales-Alanis,
P., 2011).
Despite its benefits, Tilapia may be a nuisance in some
settings. Even in dense tank culture, it will rapidly reproduce, and
the fry may spread to all regions of the recirculation system. They
may wreak havoc on settling tanks or munch on roots in floating raft
culture systems. Breeding will also lower the rate and quality of fish
production.
Many different species have been employed in aquaponic
systems. Catfish (e.g., Clarias gariepinus) have the added benefit
of tolerating low oxygen and high nutritional levels. In contrast,
common carp (Cyprinus carpio) is a generally strong fish that
can be cultivated at high density and slightly lower temperatures
(Hambrey et al., 2013). Ornamental fish can also be raised, but
many demand clean water (though goldfish are robust). Trout
thrive in cold regions; however, vegetable growth is likely to be
poor at the temperatures this species prefers (11- 17 C). Murray
o
cod (Maccullochella peeli peeli, Mitchell), Asian barramundi (Lates
calcarifer), mullet, perch, largemouth bass, Bester sturgeon, and
grass carp are among the other species farmed.
Grass carp have been proposed to increase sustainability
since they can be fed grass and waste vegetable matter instead
of a high protein diet. However, the market for this bony and fairly
tasteless fish could be better. As we will see below, the performance
of vegetable production dramatically depends on the quality of fish
feed. Grass is unlikely to be a suitable primary source of nutrients.

5. Biofloc Technology’s Benefits for Urban Communities
The ability to produce a diverse range of food products
in a small urban area close to the consumer while minimizing
environmental effects and generating social benefits is one of the
critical long-term benefits of FLOCponics systems. Furthermore, the
fact that these foods are healthful, pesticide-free, and available in