I've read that since arowanas are so prized and so rare in the wild, that the ones you buy from the fish store have special microchips (just like the dog ones) inplanted underneath one of their scales. When you breed them, there is a percentage that your are supposedly supposed to release back into the wild- but all of the littles ones are supposed to have the microchips inplanted.
I read this in AFM (Aquarium Fish Magazine). I've also heard of this around the Internet. Just wanted to let you all know!
I read this in AFM (Aquarium Fish Magazine). I've also heard of this around the Internet. Just wanted to let you all know!