Animal Stories - Ryukin Goldfish

Animal-World Information about: Ryukin Goldfish

The Ryukin Goldfish is a captivating novelty with a very round body shape and pretty colors!
Latest Animal Stories
Anonymous - 2013-02-28
My Ryukin is about 1/2 now. And just rating today he can't keep swimming or up in the tank. He tries to stay level but he sinks to the bottom and lays upside down. Can someone help me with what's wrong with him? ): Please and thank you!

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  • karen - 2013-03-14
    Swim bladder is a common problem with the ryukin goldfish. Jungle used to make a pond fungus eliminator that was great for this issue. Unfortunately, Jungle products discontinued this product (which came with alot of upset from breeders and hobbyists). frozen peas that have been thawed and fed to the goldfish seems to help some.
  • Kathryn - 2013-09-15
    Try feeding him shelled green peas. Works best if you thaw frozen ones. Do this for at least one day, or until he starts swimming right side up.
  • Sylvia Villa - 2014-03-25
    I own 2, a calico which is over 6 inches, the other a red about 4 inches. I always notice that the calico always starts acting strange and sluggish when the filters need a good rinse. After I clean the filters it's back to normal. The other day I thought I was losing him, he was just staying towards the bottom and not swimming straight. The other fish was getting underneath him and holding him up because he could not swim right or stay up. I quickly cleaned another tank that I have and got it ready for him. I put both in there not wanting to separate them. He has been fine ever since. I think the water he was in was the culprit. It looked clean in the tank but wasn't. I was so scared to lose him, I've had them for about a year now. The smaller one never has these problems. Now I am making sure the water is kept really clean. Hope my experience helps you. It's worth a try.
Linda W. - 2005-05-23
I just bought 2 Ryukin Goldfish--calicos. They are so pretty!! I have them in a 2.5g tank along with a yellow mystery snail and a "sucker" fish. They all seem very happy! I hope I have better luck with these than I did with my others. These are very colorful and very fat! I didn't know what they were until I saw this page. The fish in the picture looks just like my fish!! Wish me luck!

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  • Steve - 2013-09-09
    If you don't have better luck with your fish, it is because one calico ryukin goldfish needs 20 gallons to prosper and can live up to ten years.. and then add 10 gallons for each one after that... two would need a minum of a 30 gallon tank.
tina - 2013-04-02
I have 2 red ryukin goldfishes, one is male and other is female i got both of them last year. I didn't put any plants in the tank but everyone says she's pregnant. How do i know? I also noticed he's been following her around in a 5 gallon tank. Can someone tell me what to do?

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  • zebraz - 2013-07-08
    Buy an aquarium large enough to hold 2 ryukins. 40 gallons should be a good start.
Howard - 2010-06-21
We would like to breed our ryukin goldfish. We were wondering how to sex them, also how to measure size, as I've read they need to be 3-4 inches to be mature enough to breed ( including tail or not) We so enjoy and love our calico fantail ryukin. How can I find out if there are any goldfish shows. Hoping to hear from you soon. Thank you for your anticipated help.

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  • Heath - 2011-09-19
    Yeah good luck sexing them. I asked and they told me the only way to tell really is when its time the male will get these very small white dots on its gills said its almost too hard to notice. I am still trying to sex my two 2 yr olds Goldy and Nemo
  • Emily Hair - 2012-06-10
    Male goldfish have little tubes sticking up above their nose
  • Jeremy Roche - 2012-10-26

    During the breeding season the male has white prickles, called breeding tubercles, on its gill covers and head. Seen from above a female will have a fatter appearance when she is carrying eggs. It is impossible to sex Goldfish when they are young and not in breeding season, but generally the male is smaller and more slender than the female.

Terra - 2009-04-19
I have one Ryukin Goldfish named Mikan. Mikan

Anonymous - 2012-09-29
I have a Ryukin Goldfish he was my starter fish and went through many beginner mistakes outliving my other fish. As of now he is staying near the top of the tank and I believe he is missing a few scales. What could be the cause of this? Also I am thinking of placing a black moor with him would they be good tank mates if I have enough room?

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  • Clarice Brough - 2012-09-29
    Generally the loss of a few scales is due to an injury, and if the tank conditions are good it should be okay. Black Moors make good beginner fish as well, and can be good tankmates for a Ryukin. It's a good idea to have plenty of room as well as some plants or driftwood/rock structures that offer hiding places and areas of retreat if there is any aggression. Sometimes a fish by itself thinks of the tank as its domain, even if they aren't considered an aggressive fish. So a good idea in general is to re-arrange all the decor just prior to adding any new tankmates.
Hector Lo - 2009-03-22
Hi! I bought 2 ryukins on 18-3-2009! one orange, Lordy and one a bit calico, Lordy. They live with 3 black moors, but Lordy got sick and is now upside down, Poor fish! The other sick black moor died too! Poor fish! Pls pray for them!

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  • Emily - 2010-11-27
    I don't know if you still have your fish. But when they're floating upside down, or seem to struggle to go to the bottom of the tank. They have swim bladder problems. Feed them the inside of a frozen pea and they'll be back to normal within the day. Good luck.
  • Chris - 2012-09-24
    When the goldfish float upside down, they have the floaties. When they have the 'Swim-Bladder' problem they will have trouble being ale to get food into their mouths. To avoid the Floaty problem or 'Swim Bladder' problem with goldfish, soak the Flake food or Pellet food in water in a cup (make sure the 'fish food' drops to the bottom of the cup of water, shake the cup to make the fish food drop to the bottom of the cup). Once the fish food is sitting on the bottom of the cup of water, poor it into the fish tank. The fish can now eat the food at the bottom of the tank instead of goldfish gulping 'air' at the top of the tank trying to get the food. Goldfish gupling air at the 'top' of a tank trying to eat their fgood causes the Floating or Swim Bladder problem.
Bee - 2008-11-03
My (male) Ryukin is now a little over three years old and beautiful, but lonely :) I'd like to get him a tank mate but am hesitant to get another goldfish as I would like to get more tropical fish once this one "moves on" some day. So I have two questions: a) how old do Ryukins get? b) what type of other fish can co exist with a larger Ryukin. He's in a 30 gallon tank and happy, although eventually I want to upgrade to a 50 gallon tank. I am not a big enthusiast, just love the fish and it's the kitty tv in my house. Hours and hours of entertainment.
So, any suggestions? I've tried (2) platies before, and one of them (m)turned out to be very aggressive. Kept nibbling on my Ryukin's tail. Thankfully a friend "adopted" them from me. I would like to avoid any more trouble. So, Will I just have to bit the bullet and get another goldfish or are there any other freshwater or even tropicals that would do well.
Thanks in advance!

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  • Katie - 2010-03-04
    Unfortunately, even though your fish can tolerate warmer tropical temperatures and is unlikely to bother other fish, many fish will nip at his long fins. You might just have to "bite the bullet" as you said and get another goldfish. However, you will definitely have to upgrade to that 50 if you get two, because you'll need at least a 36 gallon for 2 full grown Ryukins.
  • Linda - 2010-11-01
    I have a beautiful veiltail ryukin who is at least 11 years old. I read varieties live up to 20 plus years. Mine is still going strong but has a cataract in one eye. As long as the 10 gal tank stays clean, she stays happy. I had her in with another standard goldfish once which she tolerated, but her friend died. She seems happier having the tank to herself.
  • Heath - 2011-09-19
    I have been checking around pet shops, talking with those who deal with these things all the time. As an owner of two very healthy and quiet large 2 yr old Ryukins I would also like to add a couple of tank mates but coming up with the same answer. Most other fish are just too teritorial to have a monster invading their space. Being very complacent to try even in a 120 gal. I am considering a couple of Gourami of the same sex to see if it is possible but it is an expensive experiment. I have read that some gold fish they live up to 25yrs in healthy conditions so all I can say unless you possibly enlarge the enviroment you're in the same boat as the rest of us and stuck for now. If I have any luck with the gourami I will post and detail the procedure
  • Chris - 2012-09-24
    Glow-Danios do well with goldfish. Also Neon Tetras and Guppies do well with goldfish also. If your Goldfish is over 5 inches long (from the mouth to his tail), make sure you buy the largest Danios, neon tetras and guppies you can (because a very large goldfish will accidentally eat tiny fish at night in the dark). If you get more than one Goldfish for a small tank, just get a good 'double power-filter' and do a 1/3 water change every other week. And change your Carbon Filters once a month. Don't get 'Bleeding Heart Barbs' as companions with goldfish. The 'Bleeding Heart Barbs' will bite at your goldfish's fins.
Daniel Poh Soon Han - 2012-07-17
I am using a rectangular aquarium (130 liters). Now, I having seven Ryukin Goldfishes inside the water tank. It is too many goldfishes inside my water tank?

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  • Jeremy Roche - 2012-07-17
    It will end up being to many as they grow!  Make sure to have an extra large filter! Goldfish produce a lot of amonia!
den - 2011-01-10
Longnose Sucker

The longnose sucker, Catostomus catostomus, is a freshwater species of fish inhabiting cold, clear waters in North America from northern USA to the top of the continent. In addition, it is one of two species of sucker to inhabit Asia, specifically the rivers of eastern Siberia. The body of the longnose sucker is long and round with dark olive or grey sides and top and a light underside. They are typically 15 - 25 inches long and weigh between one and two lb.
The longnose sucker is a bottom-feeding fish, eating aquatic plants, algae, and small invertebrates. They are preyed upon by larger predatory fish, such as bass, walleye, trout, northern pike, muskellunge, and burbot. They are fished for game and food and also used as bait to catch the larger predators.