This was collected from sea water. I am based at Surat - Gujarat in India. Also, identification keys needed for identifying fish, particularly photographs.
If You have the respective specimen, take some more pictures of it, from different angles (from above, from below it etc.).
p.s. when You take a photo on the lateral part of the fish, keep the camera somewhere above the middle part of the body, otherwise the resulted picture could be misleading (for example, if the head is closer to the objective of the camera, it will appear much bigger than it is in reality - if compared with other parts of the body)
Well. You can try fishes of India by Sir. Francis Day or Munro book on Marine Fishes of ceyone and adjacent waters. Yes, as indicated it resembles like chelonodon belongs to Tetrodontidae family..
Mr. Torok, thank you for your tips on how to take photos, actually very young budding first year students took the pictures. Being teacher, i wanted to satisfy their curiosity. They took pictures with mobile. thankyou again sir.
"thank you for your tips on how to take photos, actually very young budding first year students took the pictures. Being teacher, i wanted to satisfy their curiosity. They took pictures with mobile."
No problem!
I also got pictures taken with mobile phones by visitors of various areas where they find something that not seemed to be common...
p.s. actually, in case of very rare species, we take into account a recent record only if there was a picture of the specimen (no matter if taken with photo-camera or mobile phone - the basic issue was a technical one: if the image had enough pixels to identify (without doubt) the species...