Definately not punc., not the right type of body, or coloration. Its possible it IS another type of dwarf, but it might also be anthurus or proteus. Tis a small pike for sure right now though!! You seem to have a lot of pikes from the pictures, best of luck with them being all together. I would remove them compressiceps from the xingu I though, as they will easily eat them. Even at their size now it wouldn't surprise me. My first pair of xingu I devoured my 4" arowana...they were only 5" at the time. That elastic stomach gets yaz every time.
As for feeding them, get them on as varied of a diet as possible. Feeding them just blood worms isn't such a great idea considering the fact that they are almost 100% protein, which could lead to bloat. Try feedin mysis shrimp, cocktail shrimp, sinkin pellets (Hikari Carnivour pellets, New Life Spectrum, Super Soft Spurilena Pellets, ect.) and so on. Main thing is to give them as varied as possible. Chopped earthworms are almost always eagerly accepted. Be sure to, however, give them AT LEAST one day of fasting. This will allow them to properly digest all the food that they have eaten and to prevent blockage or any other problems!
Great pike ups! They are lookin awesome and i am jealous of them indeed!
As for feeding them, get them on as varied of a diet as possible. Feeding them just blood worms isn't such a great idea considering the fact that they are almost 100% protein, which could lead to bloat. Try feedin mysis shrimp, cocktail shrimp, sinkin pellets (Hikari Carnivour pellets, New Life Spectrum, Super Soft Spurilena Pellets, ect.) and so on. Main thing is to give them as varied as possible. Chopped earthworms are almost always eagerly accepted. Be sure to, however, give them AT LEAST one day of fasting. This will allow them to properly digest all the food that they have eaten and to prevent blockage or any other problems!
Great pike ups! They are lookin awesome and i am jealous of them indeed!
im not keeping them all together though, i have the 3 comps and the 6 anthurus together in a 530liter tank, about 145 gallon. And the Xingus is in a 660liter, about 178 gallons with a couple of oscars a pleco and a festae.. Im moving the comps to a 40gallon tank later today or tomorrow and they will be alone for now.. and the stomach is crazy, was sure it was gonna burst the second time i fed them shrimps i could almost see the shrimps in his\her stomach after eating. And laying on the bottom of the tank gasping, i was alomst sure i had killed the poor thing 
