OK here is what I have done.
I pulled out my 1 foot tank.
broke open the main fluval fx 5 from the main tank and filled a small internal filter with main tank media *(siporax)
filled the 1 foot with water from the main tank while I syphoned the fry into it.
added a thermostat/heater set to ensure that the temp is stable at 25
put a sock over the internal filter so that it didn't create as big a suction and would not pull them through
put an air stone into the fry tank
So they are in a small but well setup bare tank with their original water and temp environment and fully cycled media in a small internal filter that is also turning the water surface over briskly without churning the tank.
I have no idea what to feed them yet, or what else I should do.
There are literally thousands of them in a carpet of moving tails, mostly still attached to their eggs (?)
I am guessing it was too early to move them ideally but I am going away for 5 days and my wife will be able to do 1/2 water changes using conditioned water the same as is used for the main tank (same pH of 7.2 and prime) every day.
The parents are very very upset - gone black with rage- compare their colour (especially the face of the female) to the photos in the original post! I guess there is no getting around the cruelty of having their young removed from under their direct protection. They now seem to be fighting each other!
I hope I have done the right thing.
I would still appreciate an ID on them as per my original question/post here but due to my travel on business I have to do the best I can the best I know how and await your replies.
Here are some photos of the current state.
Note that the adults are very dark and seem quite ragged from defending their turf which they are doing admirably. I hope they settle down. There were still some fry left in the tank.