from "Day Geckos in Captivity"
This excellent book from Leann & Greg Christenson, published in 2003, is the best I've seen on Phelsuma. I know nothing of this Serraticauda but,
According to the book:
Common Name: Flat-tailed Day Gecko
Vivarium: High Tropical
Skill Level: Expert
Size: 5.1" or 12cm
Eggs: Non-gluer
Description: Similar to Laticauda except for the flat, bright green tail with a serrated edge.
Care: Rare in captivity. Breeders have found them very difficult to keep. Some expert breeders have some but the hope is to breed more lines of captive bred.
They are likely to be very expensive.
Do you have any or do you have a source?
John