The eggs were extruded as one continuous mass. Much like frogs lay eggs. The article said that the eggs were avoided by other tank mates. I am just making an educated guess about this. I also remember reading something in a National Geographic Magazine about spawning the Sargasso Sea Puffer.
Puffers can grow to a huge size and their biting power is legendary.
But Puffers have been spawned in large public aquariums in Germany. To breed them you will need big tanks, good filtration, and plenty of patience. I hope my comments help you a little. Thank you, Tonya Reply. I've never had a problem with a Puffer's beak growing too long.