Congratulations!! It's definitely a Palembang, and you want to say they are a piscivore, however, mine have been reticent to eat live fish. I feed mine most regular foods that my other puffers love: jumbo shrimp, mussels, earthworms, and a little bit of bloodworm too. The other Palembang that I had (unfortunately died) was extremely picky and was very difficult to feed, but Tooie, the Palembang that I have now is really good about eating, and has a healthy appetite.
Personally kilofey, unless you can't get your Palembang to eat other foods, I would skip the live foods for him. I feed live fish to my Congo (miurus) puffers, but that's because they seem very keen on eating live foods, but as you can't be certain the live fish you have are IP-free, I would not jeopardise your fish by taking that chance, but that's just me.
Don't expect alot of activity out of this puffer, mine likes to lay (literally) in the plastic plant that I have in there. I have a sandy substrate, but I've never seen my Palembang bury itself, although I think sand is probably better for their belly since they lay on the substrate most of the time (if they don't have a plant to hang in).
This puffer will grow to be about 8" long, but they don't require as much space as a more active puffer of that size. I have mine in a 25-gallon tank and I believe that's fine for him. I think they are nice puffers, have always liked them and am really happy that I got another chance at having one, it was very sad to lose my other one.
Anyway, I think you will be very happy with your little guy, but I really would steer away from live foods, and I would try all sorts of other foods first. If he seems picky at first, you might want to try earthworms. Mine would only eat earthworms for the first two weeks, but now he will accept lots of different foods, which is good. Even when I've had live fish in the tank with my other Palembang, I never seen him take them, I think the suvattii was eating them. And I've never bothered to offer Tooie any live fish and don't think I will.
I've been feeding my guy lightly every day except Wednesday, that's our skip day, although I think other people may have other ideas about how often to feed.
Happy Puffing!
