I  have an aquarium in my living room
What type of animals do you have in the acquarium?  Fish, snakes, etc?
Fish ,its just a moderate aquarium. Not a full aquatic life like the ocean...Lol!
I'm guessing they are more like pets, then, than food for you!  Any brightly colored ones?
Star fish,golden fish, tilapia are the pets like you mentioned
Tilapia as exotic species
Throughout much of the tropics, tilapiine cichlids native to Africa and the Levant have been widely introduced into a variety of aquatic systems. In the U.S. states of Florida and Texas, tilapia were originally introduced to curtail invasive plants. In an effort to meet the growing demand for tilapia, humans have farmed these fish in countries around the world. Capable of establishing themselves into new ponds and waterways, many tilapia have escaped aquaculture facilities across much of Asia, Africa, and South America. In other cases
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They are generally active swimmers, occupying the top half of a tank and eat just about any type of aquarium food. They will not, however, generally eat plants or algae.
Although boisterous and liable to chase each other and other fish, they are good community fish and do not generally attack each other or other fish, although they occasionally nip fins, and like most fish, eat eggs and any fish small enough to fit into their mouths.
These fish are easily stressed by flowing water and