Enhancement through knowledge

Saturday, April 13, 2013

Disposing your arowanas

A silver arowana in a man made pond.


Many people bought young arowanas when they were merely 6 or 7 inches long to raise as pets as they believed arowanas to be auspicious and beneficial for their feng shui. These infant arowanas eventually grew up, up to 3ft long and often  require bigger tanks as the continued to grow. In land scarce Singapore where majority of the population lived in HDB flats, having big 5ft tanks to house a 3ft arowana can be quite a challenge. It could get to a point where desperate owners tried to sell or even release them in manmade ponds or reservoirs. In many cases, these fully grown but abandoned arowanas thrived and continued to breed. 

I personally do not think these arowanas should not be released in the wild or in reservoirs as these are not native to Singapore. They could be donated to the Singapore Zoo especially so when the River Safari (a river themed wildlife park) has recently opened. This would be a more humane way of disposing your pets rather than to dump them into the wild and upset the ecological balance.


A pair of yellow tail arowanas in the Singapore Zoo
Of course, you can also choose to sell them off in your friendly LFS or over Ebay :P

Monday, November 5, 2012

Preserving arowana bloodlines



An interesting article illustrating the charm arowanas have on humans. I'm not really a fan of platinum arowanas, just the good old red and gold arowanas.
http://thestar.com.my/news/story.asp?file=/2012/11/5/nation/12271102&sec=nation

Preserving arowana bloodline

Big catch: Chua looking at the hybrid platinum arowana. Because of its rare colour, it is worth the price of a new Toyota Camry.

MALACCA: He is a lawyer by training but Lincoln Chua's painstaking efforts to learn about arowanas has turned him into a fish biologist of sorts.

For almost three decades, he has been learning and researching about the ornamental fish. As for the 120 arowanas in his collection, Chua has been keeping a journal on their size, hue, behaviour and origin.
Chua, 45, is meticulous about their places of origin to ensure their lineage is protected.
“The pure Golden Crossback Arowana, which is unique to Malaysia, originated from Sungai Kerian and the Bukit Merah dam in Perak before it spread to nearby aquatic sites.”
He said their birthplace would distinguish them from others in terms of appearance, size and colour.
“In order to preserve a pure bloodline, it is advisable to mate the fish only with those from the same species,” he said at his home in Ayer Keroh.
Chua has converted the patio of his bungalow into a lush garden filled with customised fibreglass tanks. Among others, he has species from places like Bagan Samak, Selama, Changkat Lobak and Alor Pongsu rivers in Perak.
There is also a hatching room in his house to nurture fish fry.
Of the hybrids he owned, Chua noted that a platinum arowana he bought two years ago when it was only three-inches long was now worth the price of a Toyota Camry.
“It is exceptional because of its rare colour,” he said.
Chua said he was looking forward to the completion of his fish farm in Bukit Merah, Taiping, by the end of the year, adding that all his fish would then be transported there.

 

A beautiful golden crossback arowana

Sorry peeps, I haven't been updating this blog due to work and family commitment. Recently a friend told me that his arowanas have started to breed. He asked if I would be keen to buy a few to keep but unfortunately, my new 4room flat is too small to accommodate a 5ft tank. During renovation, I had intended a place to slot in a new 5foot tank but my dear wife bought a piano and it fitted nicely in there. There's actually another place in the house for a fish tank but I decided to leave it empty.

Anyway here's a beautify golden crossback arowana from my friend.



Friday, February 26, 2010

My first asian arowana!

My first arowana is actually an australian arowana, otherwise known as a jardini. I kept it for 7 years before it died in a shipping mishap on the way to my new house :(

The next arowana I had was a red arowana. I never intended to get a red arowana in the first place because I always preferred golden crossback but somehow, luck has it that my first arowana has to be a red. I was then a poor NUS 4th year student and I forked out a heffty SGD1,388 for my first red arowana!


SELECTION OF YOUNG ASIAN AROWANAS

I have not had the time to write anything new in here. As usual, its work, family and studies that got my blogged down.... and guess what, I was not 1 of the 5 lucky winners for tonight's ang pao toto draw!! :(
This was 1 of the very first articles contributed by 1 of the owners, who unfortunately had since left due to personal reasons. A year ago, to my dismay, I realised that most of the original articles were somehow removed. Fortunately, James did his magic and restored the articles and now I make it a point to backup them in here.


Proper selection of your arowana is very important since your pet can be your life long companion

Selection of Young Asian Arowanas are determined by its colour development, body shape & swimming postures.


Colouration is but one of the selection criteria. However, some place heavy weightage to this than any other factors. What is the best colour? General rule, the more intensely coloured, the better. This section covers some aspects of colour in the general types of Asian arowanas. Bear in mind colour preferences are very subjective.

1. Lips & barbels
Depending on the arowana variety, the colours are as follows:

Arowana Type                                   Colour
Red (1st grade)                                  Pink / Orange / Red
Lower grade red & yellow tail            Yellow / grey / brown or mixed
Gold (crossback & red tail gold)         Brown - grey mixed
Green                                                 Green - grey mixed
Hybrid                                                Colour will depend on the types inter-bred

1st grade red


2. Gill plates
Colourations normall begins from the 'A' valley region and the horiztonal line between the 'A' region to the eye. Colour development will then spread outwards from these areas. One way of identifying the possible future colouration of a young arowana is through these hints

3. Eyes
There is no clear relationship between the colour of the eyes with the arowana type. Most of the time, the eyes are coloured in a mixture of yellow, gold, green and red of various intensity. Some hobbyists preferred red-eyed arowanas.

4. Scales
A newly formed or undeveloped scale colour is of dull shades from grey, brown to almost black. All asian arowanas will have some colouration developed on every scale when mature except red-tail gold (which will have permanent undeveloped colour on the scales on its top). Under-bellied scales of arowanas are normally white in colour. Before any colouration becomes apparent, the scale first turns into a metallic shine that usually reflects a purple hue under lights. At this time, the base core colour of the arowana can be seen. The colour base of an arowana is referred from this inner region of the scale. The outer rim of the scale will show the corresponding colours of the arowana type.
                A young crossback

5 Fins
Some juveniles may have white or colourless finnage attributes, this is because colouration is yet to be properly developed. This may make it harden to distinguish breeds that are of similar colour bases.



Thursday, December 3, 2009

KIM KANG AQUACULTURE

Some years back, we (ArowanaClub) organised a trip into Batu Pahat, Johor to visit Kim Kang Arowana Farm. The farm was then recently acquired by Qian Hu and we managed to secure a visit to the farm. The visit was an eye opener for me because this is the first time I am visiting an offshore farm. Now that www.arowanaclub.com is going to be shut down, I am rescuing all the articles especally those I had written.

Field Visit by members to Kim Kang Aquaculture - article by NSK & pictures by WesttFiel


Nobody enjoys waking up in the wee morning hours on a Saturday morning especially when Saturday is a nonworking day for many ArowanaClub members. However, 33 ArowanaClub members woke up early on 6 December 2003, eager and excited to embark on a 3 hours long journey up north into Malaysia. Their destination: Kim Kang Aquaculture Sdn Bhd located in Batu Pahat, Johor. Their objective: to witness the harvesting of the world’s most expensive freshwater aquarium fish, the Asian Arowana.
Kim Kang Aquaculture Sdn Bhd is one of the leading arowana breeding farm in Malaysia. With 118 breeding ponds, Kim Kang Aquaculture Sdn Bhd is home to about 3000 arowanas and since it merged with Qian Hu Corporation Limited, Kim Kang Aquaculture Sdn Bhd has continued to produce top quality arowanas to meet the growing demand for this majestic fish.
We were introduced to the managing director of Kim Kang Aquaculture Sdn Bhd, Mr Goh Siak Ngan as well as Mr Yap Kim Choon of Qian Hu Corporation Limited.



We arrived at the breeding pond where the workers were wading slowly through the knee-deep waters, covering every inch of the pond to guide the arowanas into the net.  



Since not all the arowanas will have fries in their mouth, each and every arowana in the pond must be checked thoroughly for fries. Using a net ensures that no arowana can escape this visual inspection. Taking a closer look into the net, we realized that this pond was actually home to about a dozen golden cossback arowanas whose sixth level scales were sparking with gold shine.



When all the arowanas were rounded up into the net, tall metal poles were erected in the pond to hold up the net to prevent the arowanas from jumping out of the net. As arowanas are naturally good jumpers, the metal poles need to be strong and high to stop the arowanas from jumping out. 















After a thorough inspection by the workers, the brooding males in the pond were soon identified. The first brooder was a 3 year old male arowana with excellent shine on its scale. This male has a big bulging jaw, suggesting that it was carrying numerous fries. This male was quickly transferred to a glass tank where the fries will be harvested.







Despite some initial resistance by the arowana, Mr Goh soon got hold of the male arowana and held it firmly in his hands, ready to pry open the arowana’s tightly locked jaws. This was no easy feat as arowanas do have teeth on their jaws and can pack quite a nasty bite on the fingers. The male arowanas were also strong and jumpy and hence gloves were worn during harvesting to provide a better grip on the slimy and slippery body of the arowanas as well as to protect the handler’s hands. Then in a split second movement, the experienced Mr Goh opened up the arowana’s mouth to release 33 tiny free-swimming fries into the water!




 
Being an experienced arowana breeder, Mr Goh held his hands tightly on the male arowana. When all the fries released, the male arowana was quickly removed from the glass tank. If Mr Goh had lost his concentration at the moment the fries were released, the male arowana might slip out of his hands or closed his jaws, injuring or even killing the fries!
A second male brooder was soon identified and this time, 27 fries were obtained. While you might think 20 to 30 fries from 1 male brooder is already an accomplishment for the farm, Mr Goh told us that some of his stronger and more capable male arowanas are producing up to 60 fries in each harvest!
Just when we thought the action was over, one worker informed Mr Goh that when the arowanas were guided into the net, 1 small fry was accidentally released into the water! Fortunately, this fry was recovered and placed in safe hands. These tiny fries will not feed for the first few days since they will feed on the nutrients in the orange egg sags. Once the egg sags are gone, the fries will be fed on a diet of both bloodworms and water insects. Had it been left in the pond, its chances of survival would be very slim.












According to both Mr Yap and Mr Goh, the farm currently has plans to segregate the pure gold base arowanas from the blue base arowanas from its breeding ponds. Thus, all the arowanas in the breeding pond were removed. They will further be segregated according to their base colour. The reason for this was obvious as the farm plans to produce pure breed gold and blue base arowanas from its existing parent stocks. Hence all the arowanas were first placed in a fibreglass tank. This also provides us the opportunity to have an up close and personal view at the arowanas.  



Looking at the arowanas in this fiberglass tank, we soon realized that these golden crossback arowanas were quite massive, reaching lengths of up to 26 inches! Mr Goh explained that these golden crossback arowanas kept in ponds are generally bigger than their counterparts that were kept in aquariums. Mr Yap also explained that between a red arowana and a golden crossback arowana, red arowanas are bigger in size. In the wild, red arowanas have been known to reach length of over 1 metre! 








Amazingly, these crossback arowanas are extremely tame and do not jump or swim about frantically after being removed from their ponds. To illustrate how tame these arowanas were, Mr Yap caught hold of a few arowanas with his bare hands and the arowanas hardly struggled much to free themselves. Each arowana displayed beautifully craved out shiny golden scales.
We were further ushered to another big pond at the far side of the farm. This pond houses the biggest freshwater fish in the world. It is the gigantic Arapaima!



Mr Goh explained that arapaimas are able to breed on its own, each time producing up to 1000 fries! The fries do not need to be harvested manually unlike the arowanas. 



Despite its monstrous size, arapaimas are quite harmless fishes and hardly attack humans. They consume their food by sucking the food into their mouth. The power of this suction power is not to be underestimated, as there was once an unsuspecting worker who was washing his hands in the arapaimas pond, he had his forearm sucked into the mouth of an arapaima! The arapaima, sensing that this was not food, quickly released the worker’s forearm! The worker suffered no injuries other than a fright but I supposed he was fortunate that the giant arapaima do not fancy human meat!  



From the arapaima pond, we retreated back to the farm and viewed the arowanas in the display tanks. Among the red arowanas on display in the showroom, there was a particular red arowana that caught our eyes. This thin framed red arowana had well defined scales and it looked as if the scales were immaculately coloured by a fine paintbrush.  





There was also a wide collection of excellent golden crossback arowanas in the display tanks. Measuring at merely 6 inches, these young arowanas were also displaying traits of their parent fish, achieving a sixth level scale shine and tiny shiny pearl scales near the dorsal fins! 


 

 



Today’s visit to Kim Kang Aquaculture Sdn Bhd was an exhilarating experience for many of us since it was probably the first time that we witnessed the harvesting process and equally amazing was the feeding of the arapaimas. Before we realized, it was time to leave the farm and head back to Singapore. It has been a wonderful day in the farm and we must really thank Mr Yap Kim Choon and Mr Goh Siak Ngan for making this visit possible. Both Mr Yap and Mr Goh were equally knowledgeable and helpful in answering our member’s queries on the harvesting process. It was indeed our pleasure to spend the day in the farm with you!
 


 

Saturday, November 28, 2009

Parts of an Asian Arowana

I actually co-wrote this with James aka West providing the photographs. It was one of his earliest crossback but god knows where it is now! And I believe the club logo was derived by tracing out the outline of this crossback on photoshop!



The original writeup as below:


Asian arowana (Scleropages Formosus), as the name implies is found exclusive in Asia and has the reputation as being the world's most expensive freshwater aquarium fish.

The reason for this is because of its close resemblance of the oriental dragon and hence highly prized. In Chinese traditions and cultures, the oriental dragon is a symbol of good luck, strength and power and is believed to ward off evil.

Ancient Chinese emperors were also obsessed with dragons and their robes were embroidered with dragons. Dragons were therefore considered auspicious.

Many businessmen also believed that keeping an arowana will make their businesses prosper. In fact, the arowana is commonly known as the Dragon Fish because of the 2 barbels.

When the arowana glides through the water, its pectoral fins often spreads out, resembling a dragon in full flight. While you may have seen a dragon in books or posters, you may wonder what the terms barbels or pectoral fins meant.

The below illustration is specially designed to help you understand the parts of the asian arowana.