Cichlids come from different places and totally different water conditions. The two main types/groups are the ones from the tropical Lakes of Africa (Malawi and Tanganyka)and the ones from the Amazon River and its tributaries in South America. The ones from Africa need water that is very Alkaline (around pH8 to 9) and has a high degree of hardness (Over 15dGH). The ones from South America are the opposite and need their water quite Acid (around pH5 to 6.5) and very soft (less than 10dGH)
an aquarium or habitat
Aquarium live rock.
Fish tanks were not 'discovered' they were invented.
yes it is
fish tanks
The Roman empire had a very large industry making fish tanks, before that, the Chinese had been raising fish in holding tanks for about a thousand years. Before that, people were probably building fish tanks since before we understood how to make fire.
fish tanks
it is the same as fish tanks
One can buy used fish tanks on AquaBid. On there, you can buy or sell used fish aquariums. Many tanks on there are cheap and afforadable, but make sure you clean it.
no
50 cm
Fishermen donate fish they catch.