pokeyonekanobi - yes I like to do my own moulds to
heart of midnight - no they are not real fish they would go manky if so, I printed out a mirror image of the guppies cut them to stuck the picture sides together and put sellotape on them so they dont get damaged.
black curtains - usually if its in sunlight it can turn yellow but some resins are worse for that than others JDiction have some that dont go yellow