Smooth newt eggs ( lissotriton vulgaris )
Image is for example, the newts fold the leaves with their back legs making them harder to see this is one I had opened so the egg could be seen clearly 
Hatching the eggs and care:
Temperature 🌡️
Eggs will hatch at 8°C and 24°C
Between 15°C and 22°C is optimal
PH 🌊
6.5 to 7.5 
Food  🦐
The larvae are very small when they hatch and need very small foods ,at this stage they rarely eat frozen foods so live is essential:
Daphnia 
Copepods
Artemia (Baby brine shrimp)
Rotifers 
 as they get larger they will start to accept some frozen foods
Tubifex
Blackworm
Bloodworm
Daphnia 
Brineshrimp ( adult )
White worm
Small gammarus
Small water louse
Tank mates 🦎
Smooth newt larvae can be kept with other similar sized newt larvae like palmates and alpines they can also be housed with tadpoles.
 
 The palmate newt (Lissortriton helveticus) is one of 3 native species of newts, the other being the smooth/common newt and the great crested newt. Palmate newts are the smallest of the 3 reaching a max size of around 10 cm. Breeding males develop a distinct filament on the end of their tail, strongly webbed hind feet, and a low, smooth crest on their back. They spend most of their time in the water during the breeding season and throughout the summer, but come back to land in late autumn to hibernate through the winter. Palmate newts while in water, feed on aquatic insects, worms, midge larvae and tadpoles. On land they mostly feed on earth worms and small insects. At Wildlife Pond and Aquarium we have captive bred palmate newts over many generations to ensure they are disease free and legal to sell. (sale of wild caught newts or larvae is illegal )