I accidently aquired a Giant Gourami when a dealer sold me what looked like a chocolate gourami adult 3 years ago. Unfortunately it was too late but good thing I have a sizeable tank for him to live in (although he may have to go soon). Tursiops (named him after latin for bottle since his nose was very bottlelike) is very much like the Gourami answer to the Oscar. He eats anything (unlike what my books say about GG's being only vegetarian) from earthworms, lettuce, mealworms, krill, bloodworms to frankfurters, turkey slices, grapes and even peanuts! The only thing I've seen him not eat are raw salmon slices. Maybe he finds them too oily.
I always wished to have a big fish as I always had my 600 liter tank filled with community small fish. So I decided to buy a giant gourami. When I bought it, it was just 10 cm big. It grew rapidly to 15 cm when I introduced a tiger oscar about 9 cm big. They did not go very well together and ended up in the oscar always hiding after the bog wood. The gourami showed more aggression as it grew, so I had to separate the oscar to an other tank. Now the gourami has grown to 30 cm in seven months. I feed it with all types of veggies, cooked meat, pellets and worms. It comes to eat from my hand and always willing to eat more! With it, I have 2 silver sharks, a normal pleco, a leopard pleco, a Synodontis ocellifer and some Corydoras which I hope it does not eat! I suggest you keep smaller (but fast) fish with the giant gourami, as they will eat the bits it leaves after eating, so no uneaten food will end up in the filter. Big filter required or more than one. Now I am very willing to watch this buddy become a big monster!
O. goramy are a wonderful fish with strong yet endearing personalities. I would say a 800 L tank with heavy duty filtration over kill would be the minimum requirement for a small adult. In my 1000 L custom I run Fluval 404's with internal power filter, and I find that keeps water chemistry within manageable parameters, coupled with large weekly water changes (extremely important). After each feed I get a large net and scoop the excess out of the tank. "Neo" loves a good feed of lemna and I have that growing in his tank. I ensure that his diet is varied and good quality fresh organic foods (no nasty pesticides) and a well balanced large pellet such as Hikari. Very rewarding fish to keep.
I have had my baby for almost one year. I got her when she was about 4 cm long. Now, she is 30 cm long and is a beautiful and loving fish, that can be fed by hand! She is a big and picky eater, but when I got her, her ONLY diet was a special type (Chinese company) of bloodworms! As she grew the special bloodworms were not enough for her. So we are giving her a cichlid (variety) food diet now. She is also a night snacker: algae-wafers, spirulina-discs, krill. As an occasional treat she loves lobster tail, large cocktail shrimp (variety of frozen blocks).
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