Jeffro_Aus:
At the very least you should have a resistor for each LED.
Ok, if i have a resistor also, will i still need a LED driver
No.
A LED driver is better but you can use either. The idea is to limit the current.
PS: You also need a resistor for your transistor.
Jeffro_Aus:
what type would be suitable for parallel LEDs?
For five LEDs in parallel this is perfect: an6884 for sale | eBay
You won't even need a transistor. You can switch it directly from an Arduino pin (connect to pin 7 of that chip).