While it is possible that the parents ate the eggs, or let other fish eat the eggs, take a close look around the tank. Attentive angelfish parents will often move the eggs. Look at other flat surfaces, both vertical and horizontal, for the wiggling eggs. You may find them stuck to the heater or sides of the tank.
Regimen: A plan or a regulated course, such as a diet, exercise, or treatment, that is designed to give a good result. A low-salt diet is one type of dietary regimen.
Contemporary academic usage of the term regime is broader than popular and journalistic usage, meaning an intermediate stratum between the government (which makes day-to-day decisions and is easy to alter) and the state (which is a complex bureaucracy tasked with a range of coercive functions)..