Animal Stories - Unusual Fish


Animal-World info on Marbled Lungfish
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Morris Agaba - 2014-07-06
I am a researcher interested in lung fish genetics. I am new to the fish world and have mostly worked with Zebra fish and tilapia. I am told by a colleague that it is difficult to tell physically a male from a female lungfish in the early stages. Anyone have and know male and know female specimens and is willing to send me specimens for DNA analysis?

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  • Clarice Brough - 2014-07-22
    What an interesting endeavor. I wish we could help, but have no specimens. However, we would love to hear what you learn as you proceed, and we wish you all the best!
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Animal-World info on Silver Arowana
Animal Story on Silver Arowana
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Steve - 2012-01-15
I've got an 18 inch arowana how much is he worth?

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  • Charlie Roche - 2012-01-16
    Something is only worth what someone is willing to pay for it. There are no specifics - just what can be asked and what canbe negotiated.
  • pigz - 2014-10-09
    124 dollars
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rosario delpozo - 2014-06-10
i have a 5 inch silver arowana in a 15 gallon tank, is it too small?? the biggest aquarium available here is in my local pet store is 50 gallon, still too small?

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  • Clarice Brough - 2014-06-27
    Yeah, 15 gallons isn't going to work for very long. Your fish will reach up to at least 24' in length when it is full grown so you'll need to upgrade even past the 50 gallon size.  Read the Aquarium Set-up information above for more info on this.
  • James - 2014-09-24
    YES IT IS TOO SMALL!! get a 300 gallon tank right of way
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Animal-World info on Arapaima
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Tan Hui Chun - 2010-10-21
Hi. I will buy arapaima fish. What is the water volume that I need (in liters)? The size of the arapaima is 15 cm. Do arapaima can survive in low oxygen condition? Do I need to buy a filter? Do arapaima need very clean water? Will arapaima have diseases face on? What should I feed to this size of arapaima? How big can arapaima grow? Thanks.

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  • yo man - 2011-01-29
    Hey man. Arapaima can get to be 15 feet long. You will definitely need filtration. The tank should be at least 25 feet long. 15 feet wide and 6 feet deep. Enjoy your monster fish man!
  • david vinson - 2012-05-31
    You will need a really big fish tank these fish are monsters
  • MagixPress.Com - 2014-09-17
    hi there, i have a couple of these fishes. sad to say, they are not suited really for aquariums unless you have the Public Aquarium type which cost a fortune. anything smaller is a recipe for disaster, they will out grown them in months, no filter setup can handle the load as well. i keep mine on ponds which are concrete about two metres deep and ten metres wide.its not even enough, next project is a mud pond which will be about 1,000 square mtres. believe it or not its the cheapest option. i used water hyacinths to keep the water cooler and clean the water of disolved materials. i feedthem live tilapia that is 6 to more inches long and i simple release them alive. its not animal cruelty.its just how they need to feed. these are very beautiful fish. my main aim is to have 25 fishes to breed them. beside the space concerns they are not expensive fish to keep. they are very beautiful once fully mature. they arent nice to look st why they are young as well. the biggest ive seen is around 11 feet long.
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Animal-World info on Silver Arowana
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Chris noonan - 2014-09-15
I have two silver arowanas together in a 184 gallon tank at the moment and it's Now to small so I have now ordered a 400 gallon tank. They seem to be happy together but I have alot of other big fish with them to like jaguar cichlid and a massive flowerhorn fire eels and some others it's quite heavily planted and they seem to love it they are always rubbing there bodies on the plants.

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Animal-World info on Arapaima
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Bob Lim - 2014-09-08
Arapaima fish also found in Malaysia,South East Asia. An Arapaima fish weighing 80 kg was caught in Kampung Tandop Batin,Mergong, state of Kedah Malaysia on 7 September 2014. Arapaima species was also known to exist in Kenyir lake , Terengganu, Malaysia too. Bob Lim

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  • Clarice Brough - 2014-09-08
    Yes, they have been introduced into Eastern Asia for fishing.
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Animal-World info on Freshwater Lionfish
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Andrea - 2014-08-27
I have one stonefish which I have had for about 6 months. I have kept him in freshwater and have not seen him eat, but he must be eating because he is still alive. I have him with other fish... red tailed catfish, banjo, and spotted raphael. I feed him goldfish

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Animal-World info on African Butterflyfish
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andy harvey - 2014-06-12
I recently bought a butterfly fish for my tank but when i go near the tank to feed him he goes to the bottom and hides which makes it hard to feed him anyone got any soloutions to this

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  • Clarice Brough - 2014-06-27
    They can be shy, but it can help if you have some more adventurous fish like clownfish or damsels. The butterflyfish will see them going to the top of the tank at feeding time, and learn to come out with them to eat. Overtime, as it becomes comfortable with its home, it should come out more readily.
  • Arf - 2014-08-09
    Butterfly Fish are freshwater... So clowns and damsels are obviously out of the question.
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Animal-World info on Silver Arowana
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John - 2011-04-11
I have two Silver arowanas . One is kept in 55 gal tank and is about 4 inches long. The other is kept in a 900 gal indoor pond/aquarium (it's built in) , and is about 13 inches long. Amazing and easy to keep fish although would not reccomend for a novice . The smaller one is kept with a small alligator gar and a small spotted gar along with a raphael catfish and a stinging catfish. The larger one is kept with 16 blood parrot
fish a small shovel nose and two 6 inche red tailed catfish as well as four walking catfish (all of which are legal to keep in my country) . One question - can two different types of arowanas be
kept together? I'm planning on getting a 5 inch pearl arowana which will be kept with the small silver.

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  • Charlie Roche - 2011-04-12
    The Animal World article says that 1 Arowana would require a minimum of a 100 gallon tank and you have 2 although the larger is in the 900 gallon tank. Is that where you would put the 4 - when they are approximately a similar size? They are carnivores and I am sure you know what you're doing but these guys get big - almost 50 inches.
  • rajesh dodda - 2014-03-16
    I will explain your question in brief by explaining the fish nature. The most aggressive pet fishes are arowana and flowerhorn. Never try to put a small or big arowana in a fish tank as arowana nature is food only so it swallows into its mouth and eats, whereas flowerhorn interests are to live alone only and in a rare case it may be comfortable with its female flowerhorn of the same size. If flowerhorns and arowanas were put together then the arowanas will be killed by the flowerhorns as flowerhorns eat flesh and don't allow any one of their tank mates whereas arowanas eat flesh but they don't fight with other fishes.
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Animal-World info on South American Lungfish
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Mel1234 - 2012-09-17
I have just acquired a lung fish about 8 inches long. He is past the external gill stage and is going to the top of the tank to gulp air like a normal lung fish. I keep him in a large tank with plenty of hiding places (plants), temperature around 72F, slow moving water, mid-range pH, low to no ammonia, and a good filter. In the 1 & 1/2 weeks I have had him I have not seen him eat and am becoming concerned. He seems rather lathargic (not much movement at all), but could that just be his behavior? I have offered him dillies (small worms), fish flakes (sparingly, he ate 1 or two), and ghost shrimp and he does not seem to be eating. Has anyone on here cared for a younger lung fish and can tell me if this is normal? Any help would be appreciated as I am trying to provide him with optimal care.

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  • Jeremy Roche - 2012-09-17
    Raise the temperature!
  • Mel1234 - 2012-09-19
    Thanks for the feedback. What would you keep it at? I had it at 78F for about a week, then dropped it to 72F because the few sources I found said they live in water 60F-80F or in the 70F range. I was worried I had his temp. too high.
  • Clarice Brough - 2012-09-19
    These are a warmer water species, so a temperature of 78F is within their range of 75-82F. It may be that it doesn't recognize the foods your offering. You could try offering live feeders to stimulated it to eat as a more recognizable food source  along with the worms, and then offer shrimps once it starts feeding. Not sure if it will every be enticed to eat flake foods. Let us know how it goes!
  • Mel1234 - 2012-10-09
    Thank you for the help! Apparently he was just faking it. He has eaten the ghost shrimp from 20 strong down to just 6 shrimp in the tank. The front left fin, which was just a stump when I got him, has grown almost completely back. I foolishly assumed he was diurnal, but apparently they are nocturnal and he seemed lathargic because he was RESTING. Thanks again for the extra information!
  • ben - 2014-03-12
    Warmer. I keep mine at 78-80. Seems to love it. Also try frozen uncooked shrimp. Not the tiger shrimp. Stick to saltwater shrimp cause freshwater shrimp usually come from nasty water.
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