i just bought an arowana just a silver arowana its like the size of a wireless phone (i dont know whats the size of it) my question is the fins of my arowana have a one small hole very small.. and the fins are like someone cut it... i really dont know how to explain it.. pls help me i dont wanna loose my arowana... i just have that arowana like 2 or 3 weeks just new... is my arowana sick?