Fascinations Magic Fish Instant Fish Kit - Just Add Water! Fascinations Magic Fish Instant Fish Kit - Just Add Water! General Features: Instant magic! Instant fun! Hatch and raise your own aquatic pets! Real fish eggs Watch the process of life as your fish grow and develop into Killifish! Killifish can grow up to 2-inches long! Recommended for ages 6 and up Add water and some eggs will hatch within 1 to 24 hours