Welcome to the forum, Juan, and I believe the word is 'incubate'.
In order to help, sometimes it's better if you provide the genus as well (not everyone here knows what the 'A.' means), but are you referring to Austrolebias nigripinnis? A pic of the fish can be found here.
Incubation table/details is at SAA's pages.
BTW, I would appreciate if you can edit your profile page and indicate the country you're from.
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