which type of shark should i get? and which sharks mix well with other fish? ??? I am a beginner who plans to get a 30 gallon tank and have a variety of tropical fish. I then plan to breed fish to have a bigger variety of fish, BUT I don't know which fish to get, Could you please send me a list of fish you have and which are easy to look after and which ones breed well. My brother and I are keen on sharks but we don't know which ones mix well could you please tell me.??? ??? ???