What do they end up looking like if you don't mind me asking?
Look at pictures here this will answer your question .
http://stingraybreeding.blogspot.ca/2010/12/falkneri-breeding-pair.html?m=1
Theirs a reason the scientist renamed castexti to falkneri . Castexti is no longer a valid species . In the hobby we will still go on calling them falkneri those being nicer castexti
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