【 Pregnant Guppy Signs of Delivery 】 Different fish have different personalities, and not every female guppy will show the same signs she's ready for the delivery. Watching for the following clues can help you know when the time for birth is drawing near: 1) Boxy, squared-off look to the female's abdomen. 2) The gravid spot is very dark maroon or black. 3) She grows still in the tank or seeks a place to hide. 4) Change in eating habits, such as refusing to eat or spitting food out. 5) Shivering