Coming out of the cool down.

  • We are currently upgrading MFK. thanks! -neo
Those Gymnos are absolutely stunning! Glad to hear you can move forward with your pond. I can't say the same here in Winnipeg. Apparently the frost line is still 4 feet below the surface. It went 10' down this year and thousands of homes had their water pipes freeze. There are still hundreds without running water. Most night time temperatures are in the mid 30s, maybe sneaking into the low 40s. Day time highs for the next few days are 62, 70, 62, 53 and 47. I'm going to fill the pond anyways and put in several species of sunfish and killies. When the water temperature hits around 65, out go the Red Ceibals and a pair of Green Terrors. Actually, I'm thinking of a pair of 'polleni' too just to see how they do. This could be a very short summer ... In fact today may have been it:irked:
 
I agree about the short summer, last 2 summers the Gymnos were out in April, night temps were in the high 30s last week here too, but this week is much improved so I'm going with half Gymnos out, and half still in the kiddy pool in the basement.
Since my son is off to college, as soon as all Gymnos are outside, I'm going requisition his room, and move the pool upstairs, and try either the Paretroplus or Paratilapia in it, to see if that helps with their spawning attitude.
I'm too paranoid of the raccoons to put the kiddy pool outside, it just isn't deep enough, and the cool nights are probably too cool for Paretroplus outside.
 
Nice gymnos! Now please direct me to your paretroplus thread.
 
Duane - does your Gymnogeo male participate in parental care?

In my experience, females turn yellow and push everything away (including males) when they breed...guard the eggs for a day or so...and then incubate them.

Matt
 
Once spawning is finished the males seem to go out looking for another receptive female, I have only seen the females care for the spawn once the eggs are put down.
Because of this, after they have spawned tanks, I remove the male.
This pond is about 1000 gallons, so what really goes on in it, is really just a guess.
But as you see in the pic, it looks like the female is preparing the site, while he simply observes, and drives off any other approaching males.
There are maybe 3 other males in the pond, and 5 or 6 females.
here's one of the other males below, that has staked out a territory about 5ft away from the spawning pair, he's hanging out in about 4" depth water.

dogofwar said:
Duane - does your Gymnogeo male participate in parental care?

In my experience, females turn yellow and push everything away (including males) when they breed...guard the eggs for a day or so...and then incubate them.

Matt
Click to expand...
 
That's awesome, Duane! He's healing up nicely.

How are the pair of Crenicichla doing?

That's my experience with Gymnogeo spawning behavior as well: The little female turns yellow and charges anyone near her, including (much larger males). One of my favorite memories of Uruguay was catching a big male Gymnogeo gymnogenys male at Paso Pache with about half a dozen holding females. He was busy. We kept him and threw the ladies back to pass on his genes...

Matt

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