What does Buffy think he/she is doing??

[Jase]

so far the only way is with either a knife or an ultrasound...

[Nick]

This really interesting. The German article suggests temperature changes during water changes to induce spawning behavior. It's interesting that GSP can breed so small, perhaps they breed at a certain age rather than size.

[Ikkle1]

Sorry? What German Article?

[Nick]

A German fellow figured out how to get his GSP to spawn, and wrote an article in German about what he found triggered the event. There's a thread on it in the puffer breeding section.

[zombiefetus]

that's crazy. maybe someday you could try to find a male (if we figure out how to tell the difference).
was the WC sg exactly the same?

Wouldn't that be nice! I love having babies around the place. But how do yu sex a GSP?

Since we know for sure yours is female, would you mind taking lots of close-up photos of around the eyes and the belly, maybe we could figure something out?

[Ikkle1]

that's crazy. maybe someday you could try to find a male (if we figure out how to tell the difference).
was the WC sg exactly the same?

Wouldn't that be nice! I love having babies around the place. But how do yu sex a GSP?

Since we know for sure yours is female, would you mind taking lots of close-up photos of around the eyes and the belly, maybe we could figure something out?

Sure. Let me get to it over the next few days....

if Her Majesty will let me! xx

[Ikkle1]

A German fellow figured out how to get his GSP to spawn, and wrote an article in German about what he found triggered the event. There's a thread on it in the puffer breeding section.

Dangitt, I can't find it!

[zombiefetus]

A German fellow figured out how to get his GSP to spawn, and wrote an article in German about what he found triggered the event. There's a thread on it in the puffer breeding section.

Dangitt, I can't find it!

This?
http://web.archive.org/web/200212120648 ... etrazu.htm
This is that Nick said on it:

He suggests significant size difference, with adult females being notably larger than males, and is specific that only one couple must be placed in the breeding tank. He suggests that water changes should be increased in volume and frequency over several weeks, working up to 70% every other day. During the weekly period he recommend keeping the SG about the same, but after that, varying. He also recommends fluctuations in water temperature in the water changes, ranging from a low of 68 deg to a high of 83 degrees, though I am not sure in what pattern. This flies in the face of what "everybody" knows about shocking fish with temperature, though I admit personally I have always thought this to be the singly most overstated danger in all of fishkeeping.(I've personally experienced bodies of water with fish thriving where the surface temperature was in the 80's and the deep water temperature in the 60's, and fish happily darting up and down between over only a few feet of water) However, this makes sense as a trigger for a river-mouth brackish fish in a tropical area - the river water will be cooler, due to spring flooding, moving over them in one motion of the tide or when flooding is great, and the ocean water from the bay warm, and pushing back at higher tides or when flooding water slows down. If that(admittedly completely guesswork) theory is correct, then the cooler water would be lower SG, and the warmer water, higher SG. From what I read he was able to get spawnings more then once, but only once raised the fry to fish, as there is no good way to get rid of 30 or so aggressive juvenile brackish water fish at once. This is the FIRST I have ever heard of sudden water temperature variation as a spawning trigger in puffers.

[Ikkle1]

A few photos, (sorry about quality, but Her Majesty WILL NOT keep still long enough!)
These were taken BEFORE she laid what we think were eggs:








Will see if I can get some better ones.

[Ikkle1]

Oh, and to give you an idea of scale, I measured the stone in the second picture, and it is 4 1/2 inches long, by 2 inches fat.

[Ikkle1]

As promised, here are some pics. now Her Majesty has calmed down a bit.....