- 25 L tank : 30% waterchange, KH 2°, GH 4°, pH around 7.0, 28° C.
There are some little fish that are much bigger and faster
than the others. Since there is a shimmer on their body I don't
think anymore they are P. signifer. I guess they're M. praecox fry
;-) swimming MUCH faster than the rest. Must be some of the little
fish I caught at the 240 L show tank.
tub : KH 2°, GH 4°, pH around 6.8, 26-29° C.
Everything looks fine, temperatur in the tub is at least 26° C
although we have only 14° C. now. At night it goes down to 8° C.
Without heater I couldn't keep the fry in the tub under this
circumstances but it's worth it. They are growing very nice.
- 03.06. - 25 L
tank : waterchanges around 25-30% daily, same parameters, 29° C.
Everything is the same,
theyre grower fast that the fry in the tub but they are growing
and still alive.
tub : KH 2°, pH around 6.8, 30° C.
The fry in the tub are bigger, darker and swimming much faster
than the fry in the small tank. I'm still not sure if I should put
all fry into the tub. The only thought that stops me doing this is
that something strange could happen to the tub (too hot, not
enought oxygen, etc...) while I'm on my way for some days. Then I
wouldn't be able to raise any fry at all. Therefore I will go on
raising the I. werneri parallel....tub and tank.
- 25 L tank : waterchange 30%, 29° C.
There are less little fish in the tank which means only a part
outdoor tub : 29-33° C., depending on
The fish in the tub are still growing quite fast. All are very active and dark coloured and
I think most of the fry I've put into the tub are still alive. I
guess the biggest ones are about 14-15 mm ! So I made the decision
to keep ALL fry in the tub. I don't have the time to culture and
feed infusoria, so I think the best way to raise fry for me is to
keep them in the tub.
- outdoor tub : waterchange 20%, KH 2°, pH around 7.0, 28-32° C
I started feeding newly hatched brine shrimp and installed my
Nauplistar in the tank to feed them permanently. Additionally
I feed them with Cyclop eeze and the very small fry with Sera
micron. I've collected mosquito eggs from another tub which I've
put into the breeding tub. So they will have a lot of live food
- 112 L tank
Four weeks ago I've set up a 80 cm /112 L tank. I removed 30
little werneri from the tub to that tank so far and some more will
follow as soon as they are big enough. The biggest fellows reached
20 mm which seems to be quite big for six weeks old Threadfins.
They are growing very well with newly hatched brine shrimp,
Sera micron and Cyclop Eeze.
I removed the Nauplistar from the tub because it was covered with
algae in a short time and didn't work any more. In the 112 L tank
it will be a perfect feeding tool.
The fish in the tub don't grow as fast as the first ones because
it became colder. Temperature in the tub is about 27° C. although
I'm using a heater. It became cold again and we have around 24° C.
I believe that my fry have grown so fast because temperature in
the tub was above 30° C. for the first four weeks (somtimes 32 -
35° C.). If possible I'll keep temperature at 32° C. for the first
four weeks in the future.
the end of Bernd's breeding diary part I. A new story is just
Threadfin breeding part II
13 days old fry