[Is my Spotted Congo Puffer a Male or Female?]

welp i bought another one after having my older puffer since November and my bigger puffer killed it over 2 days at first they were getting along but the next day the little one was getting beat up and sunday woke up and it was dead. im not sure why besides my bigger one has been so long since it seen another spotted congo puffer i bought a divider but since the weekend it wont be here until tuesday.

[Is my Spotted Congo Puffer a Male or Female?]

Hello I've had this one since November of 2020 and I'm still not sure which it is at first i thought was a female but now as doesn't have a drawn out belly not sure. As you can see sure doesn't like snails or shrimp. Any help would be grateful thanks.