Swordtail fish
Pet December 23rd, 2005Long time didn’t take care of my aquarium. now no nice fish inside. so must do some research then start importing some new nice pretty fish in my aquarium. 🙂
Common name: Swordtail
Origin: Southern Mexico and Guatemala
Maximum size: 4" or about 10cm (including tail)
Minimum Tank Size: Around 10-15 US gallons
Care:
An easy fish for beginners. Needs a temp. of 72-73*F (22-23* C.) Enjoy well-planted aquariums with plenty of room for swimming. They live in loosely grouped schools. Usually Keep 1 male for every 2 females. These fish come in a variety of colors as many other livebearers do. Some varieties include the oringinal wild-type which has olive-green backs, greenish-yellow sides, yellow belly, and a red band. There are also lyretail swords and Hi-fin swordtail varieties. They should be housed with other peaceful community fish such as other livebearers, tetra, plecostomus, among many others.
Feeding:
Takes Tropical flake, frozen, live, and freezedried foods.
Sexing:
Most likely the easiest fish to sex. Male swordtails have the lower caudal fins extended into a "sword," hence the name. Usually as long as the body, but with new varieties, some may be 3-4 times as long! The females are more rounded and do not have a "sword"
Breeding:
These fish give birth to live young. The parents tend to eat their young. At least a day or so birth takes place. (There is usually inteval of little over 30 days between broods,) the adults should be placed in a breeding trap though which the fry can escape. The young can take fine powdered food immediately, and should be fed small amounts about 3 X a day after that. The Females can store sperm for long periods of time so even if you have no males in your tank your females still might continue to give birth every 2 months or so. (These fish seem like they are always pregnant!)
Comments:
Very interesting and easy to breed fish, although they have a short life span as being inbreed over years. This can be avoided by getting a trio or more of wild swordtails and house them in a highly planted tank with medium to hard water, good lighting, varied vegetation and plenty of free swimming space.
January 16th, 2006 at 4:58 pm
my male swordtail died it,s gills seemed to have turned white or a silver color.do you know what would cause this?
January 16th, 2006 at 6:16 pm
I think your water is not clean enough or your swordtail was affected by virus or bacteria.
Try to change the water once a week to keep the water clean and put some medicine yellow powder to prevent bacteria or virus in the water
(I’m not too sure wat it call but it’s yellow color powder and made in japan, it come in a small aluminium packet and it’s quite expensive)
March 31st, 2006 at 2:17 pm
I have a female swordtail and it’s stomach looks kind of big. Is something wrong with it or is it pregnant? and how do u know if it is pregnant.
April 2nd, 2006 at 8:48 pm
i think it’s pregnant. Normally female swordtail stomach always look big if they are pregnant.
how to know if it’s pregnant?
when their stomach grow big till seems like going burst !!! 🙂
June 15th, 2006 at 4:52 pm
do the females stomach grow after eating or is that just because they are pregnant?
June 15th, 2006 at 9:19 pm
most of the time the female stomach grow big is because of pregnant. if the male always kiss the female butt then congratulation to u, your female is going to give birth 🙂
August 2nd, 2007 at 12:52 pm
Hi
I have a black female swordtail and I think that she is pregnant. I currently have a small aquarium and an orange male swordtail fish. Recently she has been hiding from him, more than usual. Right now she is currently lying on her side at the bottom of the aquarium. I dont think she is dead because i know that dead fish usually float to the top of the water. Do you think she is about to give birth or is she really dead.
August 28th, 2007 at 12:23 am
i think she is dieing i lost my female two weeks ago and she was due any day very upseting
August 28th, 2007 at 12:25 am
they dont always go to the top when dead.i have founds a few of my fish at the bottom. sorry hope this helps
October 27th, 2007 at 12:52 pm
Hi, I have some sword tail fish one of my females has given bith. I had no idea that she was pregnant. I dont even know how they give birth . Can someone help me or explain to me about this kind of fish? How do they give birth? How much time are the females pregnant for? How do they breed? How often? Please help me understand more about them.
November 10th, 2007 at 7:06 pm
i brought a pair of swordtails yesturday, she looks pregnant, and it showed as she was very dark at the back of her belly, she gave birth last night , i couldnt believe it, i had no idea how to deal with it, sadley when i got up this morning i cant find any, i sat up till 12.30 watching, the little things actually come out swimming, they were so cute, im very sad 2day, but i am going to plan ahead as she could fall again in a month, thats if i got a good male, i see 7, they can have anything betwqeen 20 and 100,
July 31st, 2008 at 11:19 pm
Its my first experience in aquarium.
I have 7 pairs of live bearing fishes including 3 pairs of sword tail and 4 pairs of guppies.
it is easier to know when guppy is pregnent by the red spot at the back, how to know if red sword tail is pregnent.
Can i add other fishes like angel and kisser fish along with them.
Plz answer my queries.
August 1st, 2008 at 2:55 pm
to know if swordtail is pregnant just check if the female has big stomach. normally i only check the size of the female stomach and it can tell if the fish is pregnant.
If you tank is not big, i suggest you not to add too much fish.
and Angel and kissing fish is big size, they will kill ur guppy.
January 9th, 2009 at 3:31 pm
hi i just wanted to know how long swordtails are pregnant for?
January 10th, 2009 at 4:12 pm
aaron: normally it takes around a month
February 23rd, 2009 at 11:21 pm
cheers great advice
i have recently got a 35l aquarium
(40cm long 33cm high 28cm deep)
and i am new to fishkeeping, i have 4 danios, 1 tetra and 2 swordtails (both male)
i am not sure about the specifics of the fish,
how many more fish do you think i can get in my tank,
chers in advance!
February 23rd, 2009 at 11:23 pm
re:comment above
all of the tetras and danios are around 1 – 2 cm in length and the swordtails are about 3-4 cm in length
cheers again
george.
December 4th, 2009 at 5:35 am
George: since you have only small fish i would suggest you can still get 4 female swords and another 2 – 6 danios as danios like to be in schools. swords are live-bearers and danios lay eggs for males to fertilize them.
hop it helps
January 3rd, 2010 at 9:57 pm
Can neon or cardinal tetras be kept with swordtails? I have 6 tetras, 5 guppies and 2 swordtails, reently 1 guppy has gone missing somehow, today one of the tetras jumped out of the tank, before now they have got along fine, suddenly i notice the tetras are very pale, you can’t even see their red stripe, should i move the swordtails somewhere else?
February 8th, 2010 at 5:33 am
Hi, I just purchased 3 swordtails today, and i know absloutly nothing about fish. I think one is dying. Its laying near the bottom but it still looks as though its breathing. It was fine when i first got it but a few short hours later this is the situation. And another fish has a huge string emerging from its belly its about 1cm in lenght. and its been hanging there for an hours. is this normal. as i said i have no clue about fish. cans someone help me.
March 4th, 2010 at 9:00 am
u need some place for your fish to hide.
Put some decoration like rocks, wood for the small size fish to hide and it will be ok
June 15th, 2010 at 7:20 am
MY WIFE AND I THINK WE MAY HAVE BOUGHT A PREGO SWORDTAIL AND IT SHARES A TAKE WITH A MICKY MOUSE PLATY HOW LONG SHOULD WE LET THEM SHARE A TANK AND ALSO THIS IS OUR 2ND PLATY THE OTHER ONE WAS BASICALLY MURDERED IN THE BAG AND IT CHASES THE OTHER PLATY AROUND LIKE A BIG BULLY COULD THIS BE WHY IT IS SO AGGRESSIVE
June 15th, 2010 at 7:21 am
AND THERE IS ALSO A DALMATION MOLLY IN TANK TOO
June 23rd, 2010 at 8:11 am
Ive had some good and bad times with swordtails. I for one had experienced the death of all my females after their first drop. I provide excellent water quality, plenty of coverage, and i keep the tanks low light or no lights for 72 hours after they drop. Im able to keep most the fry alive with no problems this way, but the adults die after birthing. I have no idea way. I feed high quality food 2 times a day, and check water parameters 1 time a week with a 50% water change. So at this point Ive no idea why the mama’s die.
September 9th, 2010 at 11:08 pm
Hi there, my boyfriend and I bought two pairs of swordtails yesterday, an orange boy and girl and a yellow boy and girl. They seemed to settle down quite quickly in the new tank with the 5 glow light tetras we also got yesterday. When we woke this morning, we notice the yellow female is now missing the lower third of her tail and seems to be distant from the other swordtails 🙁 has she been attacked and cast out or is she ill and dying?
p.s: we have had the tank for four days before getting fish and have been treating the filter with a filter start to help the bacteria grow
September 20th, 2010 at 3:36 pm
swordtail fish sometimes fight among each others. it need to take some time for them to get along especially tis is a new tank
December 4th, 2011 at 11:45 am
Hi i just got 3 fish i know for sure one was a male swordfish, everyone tells me they are great “starter” fish and how they are easy to keep alive but mine died after 3 days, i have everything they told me to get to keep a healthy environment. When i bought it he was faded looking with redish white eyes, never swam much and ever eat the other two are active little things so what did i do wrong with him????
December 30th, 2011 at 1:13 pm
My swordtail seems to be sick. She’s hiding at the bottom of my tank with side down. When I nudge her, she will try to move to another spot and continue hiding. Both my female and male swordtail have red cheeks. I tested water, nitrate is definitely at 40ppm, everything else is the same as before. I did a 25% water change, and rinse the filthy filter foam. Are my swordtails sick? what else I can do?
January 1st, 2012 at 1:24 am
What is the gestation period for swordtail fish?
January 10th, 2012 at 11:15 am
My twice female swordtails where bought at the same time as two red plattys but the they died so I got some more fish but none have died until recently when both females died back to back so is their any way to explain this, I cheked the water for any common problems but it came back clean so what do I do
January 17th, 2012 at 1:50 am
I am sandeep from india.i bought 8 red eye swordtail.after 1 month i saw2 fish having a long sword in the tail,i think its male.the rest of the 6 fishes seems to have a small sword like thing in the tail.are they males or females.i am confused.pls help me.
June 26th, 2012 at 1:56 pm
as long as there are sword (long or short), most of the time they are male 🙂