it allready have some kois and gold fish i also have a arrowana and a polypterus and a jack dempsey in there along with a pleco until the summer is over and back in the tank they go
no not afraid at all about the poly oor arrow they seem to be ok and if they get frightend they swim down to the bottom and as far as the uv i have one just need new bulb but winter is comming around the corner i dont know if i should put it in yet