hello well im not sure if my managuense is a male or female but its making a pit in the sand on my 120 gallon.And it has some blue tints on its fins and parts of its body.I think hes growing a nuchal hump....so from what i said is it a male? im goin to breed them but i need to know if its a male or female....ill get a pic of him later....maybe like tomorrow or something but ill post a pic of it.Thanks.