CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=9642026
During mating season males have darker vertical or spotted lines, whereas the females lacks those spotted lines. Moreover, the females are stockier than the males.
By Starseed (Own work) [CC BY-SA 3.0 de (http://creativecommons.org/licenses/by-sa/3.0/de/deed.en) or CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
Till date, genders are unknown for Green Spotted puffers. They are extremely pretty looking fish and has...
By Neale Monks (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
Puffer's teeth grows very fast. It should be trimmed twice a month or else it will lead to overgrowth and starvation.