This is my green arowana. I've kept it for about 4 years. When it was just about 4 cm, I kept it in a 360 L tank. It just ate bloodworms and centipedes. After it grew bigger, I moved it to a 600 L tank. There, it grew to about 25 cm, and at this time it ate small sized fish, centipedes, worms and also insects. After that, when its size reached 40 cm, I ordered a new 1200 L tank. Its diet is still the same and sometimes I give it frogs as a special treat (frogs sized 3 cm). Arowana diet is better to be changed once a week, like a week being fed with centipedes, next week with fish, etc. In 4 years keeping this arowana, my tanks are just filled with tap water and I just use a top filter system. After starting the 1200 liter tank, I use a micro balls filter system with filter at the side of the aquarium. I never check for the water pH, but just use anti-chlorine for water treatment and sometimes use anti-cloud. Temperature is about 27-28°C.
One thing we must all remember is that as hobbyists we all have different likes and dislikes. For those of us who love Arowanas (myself included) no price is foolish as long as it is within our means via saving or just outright instant purchasing. Saltwater hobbyists cannot begin to describe their investments when it comes to their hobby so why should freshwater hobbyists be any different? Take pride and joy knowing that you too can make a difference just by buying this fish legally and that you are not contributing to their demise! Arowanas are the kings of the hobby for many and will so remain in my heart and mind forever!
As a wildlife and fish conservation biologist, I recommend you only buy certified microchipped Scleropages formosus. I am a tropical fish enthusiast, and I have never seen a fish more beautiful than Asian arowanas. Every fish hobbyist should try to acquire one of these relic species, no matter the cost because it is all worth it. Even though this fish is hardy, I do not recommend to the beginners. You must understand the aquarium system; pH, ammonia, nitrite, nitrate, temperature, biological, mechanical, chemical filtrations, etc. I suggest a tank no less than 400 liters. Do not feed them feeders unless you have a separate quarantine tank for the feeders to be observed for diseases and parasites prior to feeding. I have a red arowana (44 cm in total length) in a 1100 liter tank with 2 large frontosas, two clown loaches, two flowerhorns, and a plecostomus. Notice that my tank seems under populated. I keep the temperature between 27-28°C. His main diet consists of crickets and market prawns. I feed the crickets fish pellets and carrots about 2 hours before feeding, and I stuff the market prawns with Ever Nature Hai-Feng Pellets especially blended for arowanas. I never feed him feeder goldfish for disease or parasite prevention. It seems to work for me because I bought the fish on Oct. 31, 2003, and he was only 10 cm long. Nine months later, he is a massive fish with awesome red coloration, a bit spoonheaded, and an intimadating swimming posture. Good luck on your search for Asian arowanas.
In Singapore it is very expensive. It's not because it's rare. It's because it is believed to bring good luck and fortune to the family, if it doesn't die. Many believe that this fish understands certain things, eg. if something bad happen, this fish knows. It's also a sign of wealth, a top notch fish to have. A symbol of status. It is often reared by businessman, a symbol of power and success due to its aggression and it's grace.
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