oh and also..is there any way to tell the difference in male or female fish?..i know there is with crabs..or at least dungeoness crabs..my aunt is a marine biologist..and she showed me how to tell long ago..it has to do with the shape on the bottom of the carrapace..but i dont remember..i just know that either males or females have a seperated triangle shape..and the opposite --- has more of a blunted triangle or sumthing like that..