1.   Given patience, successful breeding of this species can be achieved.

2.   Rommel and his team hypothesized that the newly found plexus lowered the temperature for successful breeding.

3.   Competition between the males and a much larger tank should increase the chances of successful breeding, said Point Defiance director Tom Otten.

4.   The rate of successful breeding remains low, although China has had some success in developing artificial insemination techniques.