View Full Version : BETTA MACROSTOMA

10-05-2008, 12:26 PM

I'm a b. macrostoma and .b rubra breeder from Portland, OR. I have a large spawn of these betta macrostoma juveniles, 4 months olds at size 1.25"-1.50, that I wanted to sell off before the winter rolls in because I don't want to put these macs at risk shipping them in cold weather.

I'm selling them in a group of 8 macs for $200 + s/h. If you interested in getting these, sent me an email to the_bentusi@yahoo.com

This is the photo of the actual spawn.

Photos of the actual parents.[

Photos of an illustration of flaring males.

For more infos, please visit my website, thread, youtube, and galleries here.

Thank you.

10-05-2008, 01:03 PM
I want some, *anyone want to split a shipment ?

This fish is becoming an endangered species. *The fish is protected by the Sultan of Brunei, who likes the fish. It's prohibited to be in possession, to try to catch, or to keep the fish in a tank in Brunei. Please remember that they still have corporal punishment in that country, so do NOT try to smuggle the fish out of Brunei.

Requires painfully pure and very soft acid water, pH <6.5 (90% RO), with a strong current, filtration over active peat. Large tanks are also advised, the fish can swim extremely fast, and have been known to kill themselves by swimming against the tank glass. Tanks should be covered extremely well, as Betta macrostoma is an excellent jumper, and is susceptible to cold air. Lot's of hideouts, especially floating plants, and very frequent large waterchanges. An UV filter is strongly recommended.

MOUTH BROODER - The betta macrostoma has one of the most unique breeding rituals in the betta world. The male and female will embrace each other near the bottom of the tank. From their, after many embraces, eggs will begin to fall from the female. The female will most often awake from the embrace first and gather the eggs in her mouth. The male may pick a few eggs from the bottom as well. The female will swim away with the eggs. The male will next find the female and she will spit some eggs into his mouth. *The male incubates 14 days.

IBC Info (http://smp.ibcbettas.org/species/macrostoma.html)

10-05-2008, 01:17 PM
Dang those are awesome!

When you want to order Bob? I need to move first but man I would love some of those!

10-05-2008, 01:49 PM
I'm working on a caresheet, and a how to breed macrotoma guide, which should be done pretty soon. When I got them done, I will send to all my buyers each a copy.

10-05-2008, 03:53 PM
I might be down to split with you. I've been eying these for a few months now.

10-05-2008, 03:55 PM
Man, those look clean!

Hope someone in Houston gets them....we need home town supply.

10-05-2008, 04:30 PM
OK, I have it from reliable sources that Bentusi / Tri Kim Li is good people and I am going to order some.
If you want to get in on the group order, *(4 minimum to assure you get a pair) PM me and be prepaired to paypal me $100, *on or before the 15th of October
I will place an order on the 17th for shipping on the 20th. *I will pay the shipping. *Receive the fish and set up a meeting place somewhere inside the loop for pickup.

Have a tank ready when they come in. *You will need a 15g or 20long with soft acid water and a good cover. *Other than driftwood, java fern or java moss I don't know of anything that will survive in such a low pH environment. *Can you plant gurus help us out here ?

I know the guy and that is where my Macs came from. *They can live 15 to 20 years and sell for $300 a pair. *You will see some at the convention as I can control the water. *I raise mine at 4.8 to 5.8 Ph. *The reason for the low Ph is that is where they come from this is the normal Ph and they have no immunity to diseases that live in the higher Ph. *I feed mine live crickets at least once a week but they are not picky eaters and so well on high protein flake food. *They will eat most anything but want a lot of it. *Hence it’s name Big Stomach. *To maintain low Ph water I have found it remains stable if you bring it down to below the level you want and then back up to the desired level. *I always keep a bucket of prepared water ready for their PWC. *I use an external filter as they like moving water. *I always cover the inlet with rearticulated foam. *You can find it at home depot. *It is the foam used for weather striping. *I drove down to get mine.
"Walden Nida"

If I remember right his name is Tri Kim Li.
that is if the pics take you to macrostoma.net
"Gerald Griffin"

10-05-2008, 05:54 PM
Man.....such short notice!

I don't think I can stabalize a tank with that low of pH that fast. I would be interested in placing an order at a later date if anyone is interested then.

10-05-2008, 06:19 PM
It gets cold in Origon a lot earlier than it does down here. http://content.sweetim.com/sim/cpie/emoticons/000200B2.gif

10-05-2008, 10:02 PM

Below are parameters of these macs living in.

pH: 6.0-6.5 (sometimes shifted up/down a little due to water changes)
TEMP: 74F (stabled at this temp most of the time)
Ammonia: 0 (sometimes goes up to 1.0)
Nitrite: 0 (sometimes goes up to 2.0)
Nitrate: 10-20

Food: frozen blood worm and tetra color.
Filter: Fluval 305 with sponge and biomax only.
Light: Dim light. Coralife T5 double with 1 6700K bulbs, no Colormax bulb used.
Cover: Plastic canvas and acrylic sheet. Yes, these little macs do jump.
Water: mixed RO and tap. I lost track of the ratio, but a lot more tap water than RO now.
Heater: No.

These macs born in 100% RO at pH 5.0-5.5. As they grow, I added more tap water, because of too many water changed, I lost track of the percentage of RO water remain, but there are more tap water in their tank than RO after months of water changed.

The tap water is prepared at least 24hrs before add to their tank, with a lot of catappa leaves. I used Acid Buffer to lower the pH, and Alkaline buffer to rise the pH, catappa leaves and peat are use to stabilize the pH.

Stable pH is very important to these macs, but if there is just about 0.5 pH fluctuation, the macs might be stress swimming up and down against the glass, but it won't kill macs.

These macs need extremely clean water, *at zero is best.

So if your tank pH is 6.0-6.5, then it is perfect, if not you still can acclimate them well using dripping method.

10-05-2008, 10:08 PM
these fishes seem like they take a lot of care......too much care for me. *But still a really nice fish to have. :wink:

10-06-2008, 05:19 AM
they are quite impressive.....
PP you get them and breed them for us here....and aclimate them to a little better ph for us so they wouldn't be so tedious to keep.....
couldn't they be aclimated to say a ph like we keep our rams and discus in?.....if he has them in 6.5...if you could bring them up to about 7.0 that would be great....my ram and discus tank is at 7.2 right now.....but they do have a very cool temp on the water there too.....
you get em and make Texans out of em first..... :D

10-06-2008, 01:17 PM
How dare you sell Macrostomas in My Market... Stealing my Business!!!!!

it's me.. Marc ("ventralfins"... www.ventralfins.com.)

just kidding....haha... good to know you are still alive.

10-06-2008, 01:27 PM
these fishes seem like they take a lot of care......too much care for me. *But still a really nice fish to have. :wink:

IF IT WAS EASY, ANYONE COULD DO IT. *http://content.sweetim.com/sim/cpie/emoticons/00020078.gif

10-06-2008, 01:28 PM
Are these F1?
Are the parents from Sarawak or Brunei?

I'm thinking of getting back into Macs.


10-06-2008, 01:41 PM
I'm in on splitting the order if you still need somebody.

10-06-2008, 01:45 PM
Just let me know how many you want (min 4 unsexed recomended) and paypal me the money and I'll include them in my order.

10-06-2008, 02:57 PM
I know someone who comes from Sarawak and go there each year on vacation. * Wonder if I can convince him to pick up like 20 of them and take them with him back to the US ?
Are they illegal to bring back if caught ?

10-06-2008, 03:43 PM
I know someone who comes from Sarawak and go there each year on vacation. * Wonder if I can convince him to pick up like 20 of them and take them with him back to the US ?
Are they illegal to bring back if caught ?

Last i checked exporting from Sarawak was legal, but not from Brunei.

The guy whom i got my original pair harvests them from Brunei, treks across the border at Temburong and smuggles them over to sarawak to be exported.

10-06-2008, 03:53 PM
hello Marc,

Long time no see. How are you doing?

Yes, I'm still alive, and my macs breeding program keep expanding. I have ten 10gals glass fry tanks, three 40gals custome made acrylic tanks with removable dividers for breeding, one Truvu breeding tank, two Seaclear acrylic 55gals grow out tanks, two Truvu acrylic 125gals tank for grow out. Two 50gals water barrels, one for RO one for tap.

I have the capacity to house 20 breeding pairs now, but I only have 11 females, which make my breeder all reverse trio, which is good so the males don't burn out. But, there are only 5 females are breeding, the others are still too young.

Yes, these are F1 from my wild caught pairs. The parents are from the unknown strain, which I assumed Sarawak. I bought them from one of the traders in Indonesia. The parents came in really bad shape with internal diseases, when I came to you for help on treating them. I was unable to save one female, which died of hunger strike.

The F1 macs juvies I got from you, bred with my F0 Brunei strain gave F1.5 (or F2) offspring. One of them died due to jump out of the tank, it happened that this one is the infertiled one, I think, because he ate eggs 6 times, while his sibling kept his brood first time.

I bought a true Brunei F0 trio, and they are breeding now. I only had 2 success spawns from them because the females are very aggressive toward the male. My old breeding technieque doesn't work well on them, because if the female doesn't see the male for days, then the male become stranger to her. Maybe I will have to use clear divider for them again, so they still see each other instead of out of sight.

Tri Kim Le

10-06-2008, 04:16 PM

I'm working on making a b. macrostoma caresheet and how to breed b. macrostoma sheet. Maybe, when I got them done, I need your help and feedback. They are going to be technical writing because my English is not as good, I don't' want to write fragments or spellings. Also, I just did a draft of how to mix tap water in a flow chart format.


10-06-2008, 05:23 PM
Nice Chart!
I'm sure the rest of the members here might chime in too.

10-06-2008, 07:03 PM
All I can say is that your tap water must be a lot softher than ours http://content.sweetim.com/sim/cpie/emoticons/00020067.gif

10-06-2008, 07:51 PM
lol.. Bob.. i love your icons....

10-06-2008, 09:00 PM
Yeah I was going to say Tap water in Houston is pH around 7.8 to 8.4 depending on where you live

10-06-2008, 09:12 PM
Hmm... Actually.. i start with pH 7.8 here around the galleria, and i kinda use a method similar to the chart.
I add enough acid buffer to crash the pH and then add back alkaline buffer to raise the buffering capacity. But still my pH swings by as much as 0.5 between night and day in a planted tank.

10-07-2008, 09:06 AM
OK - so I need to
fix the leak in my 20g long
beg borrow or steal a high flow rate filter
buy or build a small juming fish proof cover
assemble and install my RO system

locate some plants, snails or CAKs that are happy with super low pH.
* I need some help here guys * http://content.sweetim.com/sim/cpie/emoticons/00020166.gif

10-07-2008, 11:24 AM
Where in the world do you get these icons Bob?...lol

Anubias Bateri (sp?) and slowly acclimated ramshorns will live in pH 5.5.

10-07-2008, 11:32 AM
I have a RO/DI I have to install as well.
For something that requires such low pH I would not start the tank unless it's with the use of ADA Aquasoil.
I think when it comes time I will also utilize ADA's peat filter media.

10-07-2008, 11:41 AM
Where in the world do you get these icons Bob?...lol

Anubias Bateri (sp?) and slowly acclimated ramshorns will live in pH 5.5.

free Icons from DOGPILE (http://www.dogpile.com/dogpile/ws/results/Web/free%20icons/1/417/TopNavigation/Relevance/iq=true/zoom=off/_iceUrlFlag=7?_IceUrl=true) *http://content.sweetim.com/sim/cpie/emoticons/000201C8.gif

10-07-2008, 10:42 PM
I'll take four.

10-14-2008, 10:05 AM
Tomorrow is the last day to get in on the group order. *http://content.sweetim.com/sim/cpie/emoticons/0002009D.gif
Show me the Money................. or miss out on this deal.

10-16-2008, 09:38 AM
Yesterday was the last day to get in on this group purchase but if you paypal me the money before 6pm today, I will add your fish to the order.

take a look at the mouth on this guy. 5 month old, 3.5" Wild male adult Betta Macrostoma (http://www.aquabid.com/cgi-bin/auction/auction.cgi?fwbettas&1224366268), he eats everything!, even little chiclids. * :D

10-16-2008, 10:47 AM
Shameless Plug... Shameless Plug... Shameless Plug



10-16-2008, 11:02 AM
verry nice - just added your page to my favorites, *I'm sure I'll be visiting alot in the near future.

10-16-2008, 11:50 PM
Group order sent.
Now all I have to do is finish my RO system, clean the tank, wash the gravel, receive & unpack the new plants, clean the half dozen small pieces of driftwood,
fill the tank and cycle it for 2 weeks before tuesday......
good thing I have a lot of dirty old HOB filters *http://content.sweetim.com/sim/cpie/emoticons/0002005C.gif

still looking for a good deal on a HOT Magnum

10-22-2008, 02:06 AM
Shipment arrived today. *Each Betta in its own bag. *All in good health.
We did our best to identify males vs females but when I put them in their tank they all looked the same.
Now I just need to feed them large quanities and often. * :lol:

10-22-2008, 11:27 AM
I just checked on my guys this morning and all are fine. My "females" colored up before they made it into the tank; tricky little buggers aren't they? They're really inquisitive and watch me as much as I watch them. They're a very regal looking fish.

10-22-2008, 01:34 PM
Post pics!

10-23-2008, 07:11 PM
Working on pics right now, but they're fast and I can't take a good picture to save my life.

10-23-2008, 07:45 PM
I cheat, put them in a 4"x4"x8" tall beannie box and they can't do that.
Mine didn't know what to do with frozen brine shrimp last night, but they sure tore up the skeeters I gave them today. http://content.sweetim.com/sim/cpie/emoticons/00020128.gif

10-23-2008, 09:34 PM
These are the best I could get so far. They're not great, but these little guys are giving me about much trouble as my male Lithobates(I'm about 0-100 on him).

10-27-2008, 11:24 AM
My 30g MAC tank. *drift wood, java fern, java moss, dual 40 HOB filters, *R/O water, pH 6.0 *
Boy do they love skeeters. *These guys are only half grown, just wait 'till they get to 5"


10-27-2008, 01:53 PM
Very nice setup ya got there.

10-27-2008, 03:06 PM
The Stand, Tank, glass cover & light all came from fellow boxers. *That and the MACs were all that I had to buy. *
& the driftwood / plants, I borrowed from other tanks.
The R/O system has been sitting in my round2it pile for over a year.
Found the gravel in a 5g bucket that's been in the back yard since I moved 18 months ago
And when I checked my box of surplus fishy items, I found a couple of HOBs & over half a jar of Kent low pH (6.0) stabalizer from my flax & picta tanks in 2005. * :lol:

10-28-2008, 09:23 AM
Very Nice!!
Nice big bellies... nice and fat!

Make sure you cover all potential escape hatches..... couple of mine went carpet surfing through 3/4" hole in my top.

keep us updated!

10-28-2008, 09:38 AM
Yep, my flax & picta were jumpers too.
I scrounged a replacement rear flap for the glass cover and cut it to closely fit the 2 HOBs.
So unless they can swim up the outflow, I'll be OK

I read somewhere that the bigest cause of bettas jumping out of the jars/tank was that when the light was turned on, it startled them.
I now keep a 60w incandescent "night light" on in my fishroom, so they are never in complete darkness.

12-05-2008, 07:26 PM
Been doing a lot of research on Breeding MACs and thought I would share....

The betta macrostoma has one of the most unique breeding rituals in the betta world. * The male and female will embrace near the water surface and the female will released eggs into the male's anal fin. The male will be in a side-ways position, with his anal fin curveing up like a spoon to hold the eggs. * The eggs get fertilized by contact with the male's anal fin. * The male will hold this position for a few seconds so the female can gather the eggs into her mouth. * Then the male will find the female and she will spit the eggs into his mouth. *During the first few days of brooding, while the male is vulnerable, the female will protect him.


12-05-2008, 07:43 PM
That is very interesting.

12-05-2008, 08:18 PM
nice relaxing music and fish too

12-31-2008, 12:20 PM
Wow... 4" at 18 weeks. *Were your bettas long tail or plakats? *How is your Mac breeding?

Getting *:bsofftopic: so I'm going to move my answers

I lost one of my MACs - must have found a hole and escaped but I never found it.
The other 3 are only about 2.5" still can't sex them.
life span is 12 years so I doubt they mature as fast as splendens
they eat frozen brine shrimp, love live black worms, and ignore the small guppies in the tant untill I forget to feed them. * :lol: