Purchased 2 new P. Terribilis, but they don't look like the ones that I already have

[Carisab]

Hello,

I currently have 2 juvenile P. Terribilis Orange. They don't seem very friendly with each other. I thought that I would get two more and have 4 total.

I purchased 2 P. Terribilis Orange from a large frog supplier online - one that has been mentioned here many times, so I don't want to say the name.

The two new froglets are a week apart in age from the ones that I already have. I was thinking perfect. They are in quarantine for 30 days before I introduce them all together into the vivarium. I have had them one week and they are definitely strong and healthy. The shape is different. They have more of an arch than the two I have already (not so visible in the pics). They sit more like a tinc. I know that I am new to dart frogs, but since I have gotten into this I have looked at many pictures and have been to many pet stores looking. The big ? is the green on the legs. Both of mine have black legs that got orange spots and filled in. These guys are definitely different looking. I am worried that they are more Phyllobates bicolor. I called and was told that they are P. Terribilis, no question about that. I read that the Phyllobates bicolor are smaller than the P. Terribilis. I would have preferred to buy and choose from a show, but there is only one show a year in Vegas.

Anyone have any ideas???? The first two pics are of my first 2 (no green). The second two pics are of the new frogs.