Animal Stories - Livebearing Aquarium Fish


Animal-World info on Swordtail Fish
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Mukman - 2010-07-11
Hi..I've got 2 questions..
(1)Do some female swordtails have a small "sword" at the end o their tails.
(2)I have 5 swordtails, 2 red males, 2 red females and a black and white dotted male. I got to know that swordtails are peaceful fish. But my swordtails ripped the tail off 1 of my male guppy, almost killed my goldfishes and attack all my other fishes except my betta. Can you tell me why?

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  • Ian chow - 2011-01-24
    Females do have swords and develop a gonopodium when they reach their full lifespan however. They never truly change sex.
  • CJ - 2011-04-02
    Females do not develop gonopodiums. It's possible that what you thought were females are actually males that developped late. If it remains just a very small point then its probably a female but if it keeps growing you have males my friend. The same thing happened to me.
  • Anonymous - 2011-07-21
    Your 2nd question is the one I can answer: IT'S BECAUSE YOU have more males and when that happends your male swordtails will display aggresion to other fishes in your tank to show dominance. Try ading 2 or more females in your tank.
  • Anonymous - 2011-07-21
    Oh my first reply was not correct. It's suppose to be more male than female. I typed it wrong.
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Animal-World info on Fancy Guppies
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Brett Mason - 2011-07-13
TWO OF MY GUPPIES ARE PREGNANT. ARE THERE ANY TELLTALE SIGNS SHE WILL GIVE BIRTH(I DONT WANT TO KEEP THEM IN THE BREEDING ENCLOSURE FOR ANY LONGER THAN I HAVE TO). THERE IS SEPERATE AREA FOR THE FRY TO GO BUT HOW LONG DO YOU KEEP THE MUM WITH THEM. HOW LONG UNTIL SHE BECOMES PREGNANT and GIVES BIRTH AGAIN?

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  • Charlie Roche - 2011-07-14
    Guppies are pretty much always pregnant.
    They are livebearers and the young are live and they eat them. Many fish lay eggs, which are then fertilized externally. Guppies, on the other hand, are inseminated by males. The female utilizes some of the sperm and stores the rest, which she can use for five or six pregnancies henceforth if she so chooses. The gestation period now begins, which will last about 30 days. The female guppy has the eggs and stores the excess sperm, so she can always be pregnant.

    You need a baby or growing tank for the little fry guppies. The little fry should remain in the second (or growing tank) until they are pretty much grown and can join in a community tank. You see babies and mom and dad see food. They are carnivores. You don't keep "mum" with them as soon as they are born.
  • justice - 2011-07-13
    What you want to do is to add o few grains of aquarium salt to the breeder tank. That's always worked with me.
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Animal-World info on Mollies
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Katie - 2011-06-06
This is more of a question than a comment... I have just recently gotten an albino molly and I had decided to pair it with an albino cory... They seemed to get along at first but just today I noticed the cory had what looked like an injury on his head. It doesn't look too bad and he seems ok otherwise but I separated them immediately. Would a molly hurt a cory like that? I read up on both of them and it seemed like they would be alright, but I am a beginner. I'm keeping them apart in any case I think. Is it ok to have a cory alone? Hope there are some answers. --thanks

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  • Charlie Roche - 2011-06-06
    Both the cory and the molly are supposed to be good community fish. They should get along without problems. I have included an article on Fish Diseases and Treaments just in case there is a possible disease (fungus) going on. Good luck and let us know. OK?
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Animal-World info on Fancy Guppies
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farjad - 2010-10-01
I have 19 gallons tank with 4 gold fish, 2 glass fish, 2 white line, 2 black moor, 2 colored tetra and 6 guppies they all look fantastic and I love them all.

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  • Sarah - 2011-01-11
    Your aquarium is VERY overloaded. If you don't get rid of some fish your fish will die.
  • prabhakarn - 2011-06-03
    Call me india tamilnadu guppies form no 8526694355
  • c - 2011-05-17
    Just remember you should not over grows your tank. Rule of thumb is one inch of fish grown per gallon.
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Animal-World info on Swordtail Fish
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lulu - 2008-11-10
Can someone help me? Both of my swordtails are sitting at the bottom of the tank and will only move if I hit the tank. At first they wouldn't stop moving and now I don't know what's going on. Oh, and the rest of the fish are perfectly fine. If there's anyone with an answer, please comment back.

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  • victoria - 2010-03-14
    I think you should check if they are spawning because female sword tails like to be really lazy when pregnant because they get really fat and weigh more when pregnant so they just sit around but
    still eat. But if they are not eating I could find out the problem.

    Just comment me.
  • Paul R. Pedigo - 2010-07-10
    Lulu, it's been my experience with them that they like to hang out at the bottom of the tank and school there. I have a ten gal. with a hybrid female swordtail, two female marigolds, and one male marigold along with a otto cat and four zebra danios. My swordtails like to hang out near the bottom in the plants. Hope this helps you out.
  • Mary Fernengel - 2011-05-25
    I woke up this morning and can't find my female red velvet swordtail fish. The male is sitting at the bottom and wouldn't come up to eat.
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Animal-World info on Fancy Guppies
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Nina - 2010-11-24
I have over 157 fancy fantail guppies, I have had guppies many times but this time they seem to be better and healthier. I have a 50 lt tank and a 20 lt tank but in my big tank I also have a spotted bristle nose catfish but my guppies seem to pick at him a lot since his mate died nearly six months ago, why is that?

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  • Chris - 2010-12-23
    I saw a small fish picking on a big fish that was sick at a pet store. Is your catfish sick or depressed? Look for any signs of these.
  • Anonymous - 2011-05-13
    Purchase another spotted bristle nose catfish. When a fish loses it's mate, it can become depressed and other fish will pick up on this as a sign of weakness, and will kill it. If you purchase another spotted bristle nose catfish ( opposite six of the one you have) the one you have will improve and will respond positivly to the new arrival.
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Animal-World info on Mollies
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Bret - 2009-08-22
I have 2 Sunbrst Lyretail Mollies with a dragonfish, a Pleco(stomus), a pictus catfish, and a skirt fish! they are all getting along and are very cool!

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  • colleen - 2011-04-19
    I've got mollys but my gold is turning white. Is that normal?
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Animal-World info on Platies - Moonfish
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FB101010 - 2010-11-08
I have 4 male and 4 female platys, in a 20g freshwater tank, along with 6 X-ray tetras and 5 neon tetras (small). I have noticed lately (last 3 days) that the platys are all laying at the bottom of the tank, as if resting, and they only come up and swim around if I approach the tank and/or feed them. Are they sick? The tank has cycled and I have had fish in it since October 10...I am new at this.

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  • melissa - 2011-01-05
    Greetings!
    Its not a good sign when a fish that is known to be active starts becoming still. If it's not too late do a 1/3 water change every three days or so. If your tap water has chlorine in it you will need to treat it. My water is well water and perfect at that (lucky me)! You may want to go out and purchase some malachite green or something even as simple as a product by jungle called anti fungus. Follow the directions on the package. If your fish have any white spots or clamped fins or swimming is strange motions you have sick fish on your hands. The #1 key to keeping healthy fish is keeping good water quality. Your fish tanks water ( depending on the load of fish) should have a water change every week or at least every two weeks. I do half water changes every one to two weeks. Buy your self a water test kit from the local pet store or online. It should have Ph, ammonia, nitrite, nitrate tests in them and a few others. Second important thing is to give them a good diet. Certain natural foods can provide your fish the nutrients to help boost your fish's immune system. My fish get a mix of food that I buy and mix myself. It can become costly but if you buy in bulk it's cheaper and it can be frozen up to one year. Here's a few foods that can work for fish from fry size to large platies. Plecocaine, Decapped brine shrimp eggs, apirulina algae flakes, Brine shrimp flakes, dried daphnia, Golden pearls 500 to 800 micron size, Astaxanthin powder ,earthworm flakes, and any other live dried foods. Mix those together and you have the best food money can buy for fish! It's a food mixture the pros try not to tell others about! You can also feed frozen bloodworms and frozen brine shrimp, wingless fruitflies, and so much more. Live plants in the tank is a very good idea too! I have also blanched spinach and chopped it up in my food processor and fed very small amounts to my fish and they will eat that too! I usually feed that every few days just before I feed them all the good stuff. It's something they will get use to eating that they NEED. Yes fish need veggies too. Best of luck with your fish! melissa
  • anthony - 2011-04-05
    That is because your water is TOO COLD! Means damaged swim bladder by the water being to cold! Make sure your water temperature is between 78-80 degrees. 78 for maintenance and ideally 80 if you want to breed efficiently.
  • Charlie Roche - 2011-04-07
    Is it possible for the tank to be too small for that many fish? I have been told a blueprint to follow is 1 inch fish for each gallon and to subtact out gallon capacity for gravel decorations, plants etc. You have You have 19 in a 20 galllon tank. Is it possible you would need a larger tank. Of course than you can have more fish also. Maybe they just can't find their own terriory?
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Animal-World info on Swordtail Fish
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Larry - 2009-11-08
Me and my gf are starting to breed various swordtails... before I do I had a couple questions before I proceed.

1.) is highfin and sailfin the same as I heard both talked about as very good looking
2.) Lyretail males can not reproduce, is that correct? (so I can go about it from the female side)
3.) black tails ie bluewagtail is that really cancer and probably a bad idea to try to do?
4.) cause I was thinkin a highfin lyretail with the blue black coloringw ould be, well amazing so is that a possibility for a healthy fish

anyone know those answers?

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  • Byron - 2010-06-19
    1. a high fin or hi fin and sail fin (the term sail fin is mostly used on platies) are the same but variation is known to exist between sexes I have noticed females with hi fins keep their fins on top and not folded while on males because it is more elongated it flows down to their side. 2. lyertails cannot reproduce since it gets in the way of reproduction 3. no answer because I've seen blue wag platies only, I've never seen one with a sword but the platy I did see did not have cancer 4. As for your goal let us know how it goes I'm always interested to see how people create hi fins keep a good log on your progress
  • Melson - 2010-09-27
    Highfin and sailfin are two different breeds. Any male who's got a long fin at the bottom...no the sword...cannot breed. They look beautiful but they are duds.
  • Tha IGz - 2010-10-10
    Lyretails can breed with female fancy tail guppies..I have a tank full of them and are quite beautiful.
  • anthony - 2011-04-05
    1.) Sailfin and hifin are one in the same. In the aquarium world there is many different trade names both for swordtail varieties - as such what one may perceive as say a brick red one might just say red or "orange" meanwhile it is indeed brick red. As such the sail-fin or hi-fin are one in the same just one person calls it sail fin where as the professional breeders call it hi-fin..well simpson hi-fin. 2.) Lyretail males are incapable to breed due to their overly long gonopodium so..to obtain lyre tailed offspring mate a lyre tail FEMALE to a NORMAL finned male..50% of the offspring will be lyretails. Just remember that when lyretail offspring are born right away they don't have the lyre fins till about 3 weeks old so keep all fry till at least 3 weeks old to determine how many lyres you got. Also remember that swords are not sexually mature till about 8 months of age up till then they all look like females. One reliable way to sex the fry around the 3 month mark is to look for the gravid spot, these are females as only females have it..provided the fish variety isn't a dark color..watch for the thickening leading edge to the anal fins around 4-6 month mark these are males as this will later be the gonopodium. 3.) Any wagtail variety is not melanomic, it's only melanomic if the black is on the body the more black the higher the chance of the fish getting it. Painted swords and black swordtails are the worst color varieties for developing the melanoma but not EVERY fish gets it, it's not infectious to other fishes and certainly not to man! 4.) Yes that would be an interesting color combo to take a few yrs to develop but if you succeed then I would certainly look to have the variety registered. A good way to start if you want a blue wag lyretail is to have a lyre female sword preferably green wild color. Mate her to a male blue wag platy. That way you have 50% lyretail hybrids, mate any that resemble the blue wag male back to the lyretail swordtail to create an almost pure swordtail once again and you have an almost pure blue wag lyre tail sword created from a similar closely related species. Remember swordtails and platies as well as swordtails and variatus platys easily crossbreed. (But always if you chose to mate variatus into swords you have to use a male variatus to a female sword..male swords have been proven not to inseminate variatus females BUT if you use a variatus male to a sword female then they will cross breed. It's a good way to end up with colors no one seen before and the male fry from that cross when raised to maturity develop cool little swords that are tiny and curved up like a hook lol very neat to see.
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Animal-World info on Mollies
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paul - 2011-02-07
We are having an issue with our mollies dying and are not sure why. We have 2 black mollies and a silver that we have had from the beginning that are alive and doing well. We have lost 1 silver molly, 1 dalmation, 2 plecostimus, and 1 guppy. Any suggestions?

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  • Brody L - 2011-04-05
    Hi paul,
    Here are some things you might want to check:
    water quality
    pH, dH, temperature
    some of your mollies may be aggressive and are killing the other fish
    I hope this helped you a bit.
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