Hello Chloe, 
         Apologies for the late reply I don't log on to Wikipedia much these days...   If I understand your question correctly, yes, I can confirm I took the photo of the horned melon (Kiwano as it's called here) and it is free for use by anyone for any purpose, at least that's what I intended setting the usage rights to.  I was going to offer a better quality version of the image but can't find the original photo of the whole melon though I do still have a photo of the melon cut in half, should you want the photo. 

 Å