Arowana Care: There's a Fossil in My Tank!

The Amazon River is probably the most widely used poster image for biodiversity; the whole stretch of freshwater running for miles is the home to a huge fraction of the world's flora and fauna. Among the animals which live here, the fishes have the most number and most diverse. One of the well-known and well-loved fish species is what people call as the "water monkey of the Amazon" -- the arowana fish.

The earliest fossils of the ancestors of the arowanafish date to 200 million years ago in the rivers of Africa, but the fish we know today found its home in the Amazon River 140 millions of years ago, dating back to the Early Cretaceous period. Ever since then, given its superb features, the fish had changed very little; hence it is sometimes called as a living fossil. That is why the arowana does not look like the modern pet fishes which are commercially available; they boast a history dating millions of years back. 

This fish can grow to lengths of four to six feet, all thirty pounds of pure muscle which gives them excellent darting abilities. They also have huge eyes which led some ecologists to assume that they have one of the sharpest sights of all the fishes. Another tell tale sign of it being a living fossil is that it has a swim bladder capable of directly infusing oxygen to the blood vessels, something which lungs of terrestrial animals can do.

In the Amazon river alone, there are already three subspecies of the arowana fish, all stemming from the evolutionary branch of Osteoglossum (bony mouths). Since people started breeding these fishes outside the Amazon, there are already other species which can be found in Asia and Africa. The Amazonian arowana boasts a slender and broad body, but the newer species are shorter and stockier compared to the original generation.

Domestic fishes nowadays are getting smaller and more colorful; people tend to flock around fishes which look "cute" with vibrant colors resembling that of neon lights and commercial inks. With this trend, the arowana fish is reduced to just becoming a living fossil, a fish with jurassic and grotesque features. However, one should see the beauty in these fishes, and this beauty is not something many people take for granted. Just like in any beauty pageant, certain criteria, all set to critics' and experts' highest standards must be met.

One, there are the proportions, and for the arowana fish, the broad look is becoming more of the trend: wide body with well-proportioned fins and a pointed mouth forming a good slope between the head and its back. This look gives them the look of strength. Second is the color which should be bright, uniform, and lustrous with the hue depending on the variety. 

The scales should also be of the same color to each other and should be distinct from one another. Third are the fins, which should be not too long and cramped and should have a color not far from the body color. The barbels should also have the same color as that of the body's and should also look firm and long.

Fourth are the eyes, which should not be popping out and protruding. Fifth is the mouth, and the mouth of the arowana fish points upwards where either the upper or the lower lip protrudes. Sixth are the teeth which should look neatly arranged in line with its jaw. Lastly, and most importantly, is its swimming posture. Even though it looks like a misfit with its size and features, an arowana will always stand out because of its smooth and majestic movements; the swimming posture should not look shaky and erratic.

Arowana Care: Arowana 101

Popularly known as a household pet, the arowana fish is a freshwater bony fish which belongs to the Family Osteoglossidae (coming from the Greek words osteos meaning "bone" and glossa meaning "tongue"; literally bony-tongued). This name is gotten from the fact that their tongues have a "tooth" which they use to grind against the tooth in the roof of their mouths. Another interesting about the mouths of the arowana is that they use them to hatch their eggs, an adaptation known as buccal incubation. In fact, on average, an arowana can hold hundreds of eggs in its mouth, where the young ones would eventually feed.

These fishes have a bony head and an elongated, slender body. Their scales, shaped by the turbidity of their natural habitats, are large and heavy with mosaic patterns and canals; in some species, the scales even acquire a glossy and reflective surface. Aside from these scales, their fin patterns also give the arowana fish a distinct look. Their dorsal and anal fins have soft rays and are long based, while the pectoral and ventral fins are small. Also, they are known as obligatory air breathers, fishes which need to fill their swimbladders with air not only to float, but also to obtain oxygen. These swimbladders resemble the lungs in the sense that they are lined with arteries and veins.

The arowana fish is naturally carnivorous, and are shaped by evolution to be excellent surface feeders: they get their food by jumping. Specialized muscles and aerodynamic body shape enable them to become powerful jumpers, some noting that they can jump as high as 6 feet. These heights suit their diet of flying insects, small arboreal mammals, and low flying bats. Two species of the arowanas are found in the Neotropical region, one in the Southeast Asian region, and two in New Guinea.

Having an arowana fish as a pet can be tricky, but the rewards make the struggle all worth it. That's why there are certain points and tricks to remember on how to maximize the joy from keeping an arowana. First, arowanas are really huge fishes with sizes averaging to 37 inches, and they like to be alone. Many hobbyists, however, had found ways to mix in a little bit of a company with large and active fishes like plecostomus catfish and tinfoil barbs; others which are smaller and weaker tend to be dinner. Second, they move around A LOT, and that's why there needs to be a sandy base and a huge room for movement. To keep them from being stationary, however, many enthusiasts had already seen the benefits of placing a table tennis ball in the tank; something which is moving.

Third, they need a hell lot of nutrition, and it is better if it is alive. Be careful, however, not to introduce disease. Also, fat should be avoided as to prevent the drop eye disease. Variety should also be introduced as to prevent the onset of nutritional deficiencies, as well as the fishes getting tired of the diet. Mixes of insects, chopped meat, and pellets have been proven effective.

Fourth, it should also be known that they are naturally shaped to become excellent jumpers; they jump randomly. This calls for a tight lid. Lastly are the tank conditions; something an arowana fish tends to be meticulous about. The water should be fresh and have a well-kept pH level of 7 (neutral). The temperature also should not be far from 80 Fahrenheit, since the arowana is an equatorial fish. Again, because of its size, be prepared to have huge space for a tank which holds about 50 to 120 gallons.

The rest is for the arowana fish to ask for.

Arowana Secrets, The Most Beautiful Freshwater Fish in the World?

If you are a fish lover or fish keeper or just have an interest in some of the more exotic and mysterious creatures that inhabit our planet then let me introduce you to the 'Arowana' fish.

Considered by many to be the most beautiful freshwater fish in the world with a number of different species found in spectacular colors, the most colorful of varieties to be found in Asian rivers surrounding the Indonesian islands of Kalimantan, Sumatra, and Papua.

'Arowana' from the Indonesian word 'arwana' or 'Airwana' which in English means 'paradise' is often called the 'paradise fish' by native Indonesians. Highly revered in the orient for its spiritual significance as a re-incarnation of the Chinese dragon, signifying auspiciousness, prosperity and wealth, and even Looks a bit 'dragon'; like with its large scales and barbells and its vibrant colors, the Arowana fish has become a popular favorite with serious fish keepers world wide.

Like many exotic fish that have become popular as pets all over the world Many species of arowana are now considered to be endangered in the wild and as such are protected under law. They are farmed though and can be bought in many spectacular colors and exported under strict license laws, with each fish having to be microchiped and certified for transport before leaving Asia.

Arowana fish can carry quite a high price tag, depending on a number of factors, such as, the particular variety, the age, younger fish are generally cheaper but are a riskier purchase as the fish hasn't fully developed and its colors can't be reliably predicted when it reaches maturity, so its probably better to buy a fish that's at least two years old, though it will cost you more. Some of these fish can be worth up to $250.000 but can be bought for a few hundred dollars, the less colorful varieties usually being the cheapest.

A fantastic creature to own and surprisingly hardy, they are a great investment as arowana can live for Up to 20 yrs or more in the right conditions. Be prepared to buy a large tank though, as arowana can grow up to 40" long, tank size will need to be about 2' x 8' in size depending on the fish variety.

Keeping arowana does require some dedication especially if you want to do all that's possible to bring out its vibrant colors, and can be quite tedious, though a lot of keepers claim to form a strong bond with there precious pet and though they are a challenge the doting keeper would say that they are well worth the effort.