i have a kissing gourami myself so i can give you some hopefully helpfull advice on these fish.
these fish can be kept alone, but are very sociable fish with their own kind. i keep mine with a golden gourami.
they can grow upto a massive 12 inches...tho they are pretty slow growers.
so they can to start with have a small-ish tank, but will of course need a much larger tank when its bigger.
mine is in an 80 gallon with other fish
so on its own it could go into a tank of about 15 maybe 20 gallon.
something of around that size.
these fish can be kept alone, but are very sociable fish with their own kind. i keep mine with a golden gourami.
they can grow upto a massive 12 inches...tho they are pretty slow growers.
so they can to start with have a small-ish tank, but will of course need a much larger tank when its bigger.
mine is in an 80 gallon with other fish
so on its own it could go into a tank of about 15 maybe 20 gallon.
something of around that size.