The appearance of Coelognathus flavolineatus is quiet varied and depends mostly where they originate from. A lot of specimens we see in captivity are from Indonesia and are a dull brown to olive colour with only a faintly visible yellow dorsal stripe as adult. Mainland forms are usually the most attractive, with the Vietnamese being the most colourful and sought after.
Rob Kool has been keeping 2.2 adults of the Vietnamese form for a few years now, but tells us that in the past he has found them a difficult species to work with as the eggs are very hard to hatch and once they have the hatchlings are difficult to get started. It was with great excitement that he told us that his female had laid a clutch of six eggs on the 2nd June. Which he incubated in a wetter than usual substate of vermiculite by saturating it with water then pouring the excess off the top, the eggs were placed on the vermiculite with no top layer. He tells us that he believes the added moisture helps to soften the shells and something he does for not only the Coelognathus species he breeds but also Gonyosoma species whose eggs are also notoriously difficult to hatch without intervention.
On the 9th September 99 days after laying he was checking the incubation boxes and was delighted to find that one of the flavolineatus eggs had pipped by itself, he says there is an unwritten law that says manually pip the eggs at day 100 for the best possible chance of success with these, but this wasn't needed in this case. Over the next two days all eggs had pipped and the babies had emerged. Rob noted how quickly they had exited there eggs, as he hoped to be able to send us some photo's with the babies poking there noses out the egg, but when ever he checked the box they were slit and out. The babies he says are very fast and defensive but all perfect little replica's of their parents, which unlike the Indonesian forms will take their bright colours into adulthood with them.