I got a gold guy a while back, and I have enjoyed having him. I did a dumb thing and put him in a tank with a betta, of course the betta got his @$$ kicked! But otherwise the guy has been a great fish, he is a "top of the tank" fish, I have never seen him below 1/2 way, believe it or not. Mine is still kind of small, I am a little worried about how big he will get, but I guess he will be fine, in my 140 L tank.
I have four gold gouramis in my 100 L tank. They are the only occupants of this tank and I don't plan to change that. The thing about gouramis, and especially the gold ones, is to keep only one male. I have one male and three females. Gouramis in general don't like each other, so when you mix and match species it may be a problem. The male golds are territorial and when introducing another female or even at feeding time, according to my male, there is a pecking order. My golds are very social fish. I have even had them nibble at my fingers. I feed them a variety of foods, ranging from blood worms to cucumber, and I think they are just the most brilliant gouramis out there. Very hardy fish! From what I have seen with mine - as long as you keep your water condition consistant - they will be OK. If you have golds they tend to get more aggressive when the water is warmer. I keep mine at about 24°C.
I have just started this hobby up again, and seem to have gotten a tad bit more involved than when I was a kid. This time, I was brave enough to purchase a larger fish; my gold gourami was about 9 cm when I got her. I also bought a red-finned shark and 4 tiger barbs. After about 2 weeks, I noticed that my beautiful gourami had scales missing, large red patches on her sides, and no appetite. I hurriedly went online to find out that these conditions were indicative of a bacterial infection. The periodic doses of antibiotics and stress coat ensued, and within 24 hours I noticed marked improvement. Needless to say, I watched her constantly when I was home. I was doing just this on the second night of my vigil when I noticed that my red finned shark was swimming curiously close to the gourami. Believe it or not, I witnessed my shark actually "cleaning" the wounds on the gourami! She would go down to the bottom of the tank just to be "cleaned" while she was recovering. After a week she was perfectly healed, and also made a new friend. It's been about a month now and spends more time at the bottom visiting, and eats flakes and frozen brine shrimp eagerly when offered. This is a very hardy and friendly fish when given enough space and attention.
I see the blue and the gold gourami being viewed more or less as separate species. Well, they're both Trichogaster trichopterus as far as I know, but I'm still not sure what the wild-type looks like. Since we've got blue and gold I suspected that the wild-type might be a brown fish. This hypothesis would fit since then both major lines would be mutations lacking the opposite primary pigment types, namely melanochromes (black/brown) or erythrochromes/xanthochromes (red/yellow). Most naturally occurring fish are brownish due to possessing a mixture of these pigments and a multitude of aquarium breeds are derived from excluding one or the other pigment. I just crossed a gold female with a blue male. My fry are the size of newborn guppies right now so I can't tell what they're going to look like yet. At any rate, I'm 95% sure that we're dealing with one and the same species and I think it's time somebody made that point. In a couple of weeks I'll be in a better position to judge their coloration.
I have a total of five gouramis in my 200 liter tank. Originally I had 6, but one of the gold guys had a really tough time right from the beginning, never really grew at all and ended up dying. I think he had a bad fin cause he swam a lot like Nemo. The gold one that I still have however is growing very quickly and has easily passed the rest of them (the others are opaline and some dwarfs) for the most part they get along fine except for a male betta that is slowly getting beaten up.
I recently purchased a single male golden gourami. I thought it would be a good fish to add some colour and movement to the top section of my tank, which consists of tetras and corydoras. However, he spends very little time in the top half of the tank, instead he spends most of his time in the bottom of the tank where he constantly bullies my three corydoras, who used to spend a lot of the time out in the open. Now they are forced to hide behind some bogwood. I am going to see if the LFS will take the gourami back. Beware of the golden gourami, as it is not always a peaceful community fish!