Found it, definately not a beginner breeding attempt though....
From
http://www.loaches.com/loachbreeding.html
One hot Summer day one friend returned home from work to find that the clowns in his charge had eaten all of his prized 4" Giant Danios!!!!!!!! They were behaving very strangely, prowling up and down as if distressed (probably ate too much!). He checked all water parameters, but found nothing odd, apart from a couple of degrees higher than normal temperature. After a "cool" water change all returned to normal. Two weeks later, Granvilles 4 fish suddenly refused food. The next day they started prowling around as his friend described. The water was OK, but he changed some anyway as the only common factor with his friends tank was that both were overdue for a water change. The fish calmed down. He decided to try and duplicate the situation to see if the behavior would change again. Initially, Temp. was 84F, PH 6.8, Ammonia & Nitrite nil,Nitrate 25 ppm or lower. After a week of heavy feeding the Temp was 82F, pH 6.5, and other stuff the same. On day 12 they refused food and the weird behavior returned. Temp was 86F,pH 6.3, others the same, except nitrate up to 50ppm. Remembering the out of character murder of the Giant Danios, he decided to see if the fish might be interested in some White-bait he had in the Freezer. What happened next was incredible. The fish went crazy. He says "Frenzied Feeding" would be an understatement! They refused all food except the fish, which they ate until bloated, resuming their "hunting" a few hours later. 4 weeks later after this intensive feeding, the female loaches were over 2" taller than the males. All fish had doubled in girth (hardly surprising really), and had intensified coloring. Nitrates had gone of the scale, so he added a canister filter with nitrate removing resin. pH was now 6.1. Due to evaporation the water level had dropped 3". At this point he reconnected the tank back into his centralized filtration system, feeding the tank via a "shower head" return. Within 48 hours the fish behavior was back to normal. After feeding, two fish would rise to the surface,entwined together, and " clicking" to one another (I'm sure most clown owners will have heard these noises). They were a male & female but no eggs were produced. BUT THE NEXT MORNING!!!!!! Small, slightly golden eggs were on the tank sides and base and on some plastic pipe hidey-holes for the fish. Temp was 82F, pH 6.7, nil Ammonia & Nitrite, Nitrate less than 25ppm in the tank where he placed the pipework with eggs. The fish, which appeared exhausted (obviously, a busy night!) suddenly perked up and Breakfasted on the remaining eggs! Upwards of 450 fry hatched and were fed on a proprietary liquid food for 2 weeks, with a supplement of crushed flake after 10 days. Crushed flake was then fed alone and the fish grew rapidly till they could take whole flake. At 6 weeks, they were 1" long total length, then growth slowed.
i hve seen this article too! quite interesting i was thinking about maybe put them in my larger tank feed them lots of meaty foods (i.e. fish, mussel, cockle etc) and let the nitrates rise whilst boosting the temp and then do a large water change and lower the heat down, whilst at the same time trying not to cause a whitespot outbreak
