Hi Marckitt,
They all basically look the same, but 149 looks like he might have higher, cooler side patterns than 150. Sumatrans get darker and darker with age, so both will be very dark as adults. Neither of these are Black Heads per se'. They fall somewhere in between Chrome Heads and Black Heads. 149 seems to have some cool black shadowing on his head that might darken up more as he ages, though...
Glad you decided to go with captive bred instead of captive farmed.
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