Ben,

You will have more success with identification in the future if you take better photos of your specimens. Take the specimen and place it on a dissection board. Using dissection pins try to spread all the fins out as much a possible to reveal the number of spines and shape of the fins. Try to do it for all the fins if possible. Once you have all the fins spread out take a photo as close up as possible. Hope fully that will give everyone more clues to what they are looking at. The following is an example of good pictures

https://www.google.ca/search?q=fish+preparation+for+identification&biw=886&bih=874&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwigj6TK7orQAhVqqFQKHVNKD3sQsAQINw#imgrc=Umw5Q4jlTdGvGM%3A

Cheers,

Tom

Many important details are not visible in the photographs; please find a tentative, initial list of identifications below. Better quality photographs would be necessary for confirmation/more detailed identification.

1   Uncertain in TETRAODONTIDAE

2   Ambassis kopsii Bleeker 1858  AMBASSIDAE

3   Muraenesox sp. (?cinereus)  MURAENESOCIDAE

4   Scorpaenopsis sp. SCORPAENIDAE

Ben,

You will have more success with identification in the future if you take better photos of your specimens. Take the specimen and place it on a dissection board. Using dissection pins try to spread all the fins out as much a possible to reveal the number of spines and shape of the fins. Try to do it for all the fins if possible. Once you have all the fins spread out take a photo as close up as possible. Hope fully that will give everyone more clues to what they are looking at. The following is an example of good pictures

https://www.google.ca/search?q=fish+preparation+for+identification&biw=886&bih=874&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwigj6TK7orQAhVqqFQKHVNKD3sQsAQINw#imgrc=Umw5Q4jlTdGvGM%3A

Cheers,

Tom

Thanks a lot Ronald and Tom. Yes, I agree that the pix are not good for IDs. They were taken on site by enumerators. We failed to train them in fish specimen photography. Your inputs and suggestions are valuable contribution to complete this study. Thanks again.

Ben

3. Muraenosox Sp. (Cinerius/bagio) needs to be conformed

1. Arothron (immaculatus ?), juv.

2. Ambassis kopsii, agree with Ronald

3. Muraenosox (cinereus/bagio), agree with Ronald and Anil

4. Scorpaenopsis sp., agree with Ronald

1. Arothron sp. (Tetraodontidae) May be A. immaculatus

Thank you Subodha. This will be helpful.

Ben

1. its a species of Puffer fish. 

 2. Ambassis sps.

with the help of these picture/photographs we can not identify exactly. 

Thank you Praveen for providing more information to my question.

Ben

First and second picture, I agree with Ronald, third one i don't feel it to be MURAENESOCIDAE, it resembles more of Trichiuridae (Trichiurus sp.) and fourth one may be Scorpanoides guamensis, however needs verification, since the image is blurred. It would have been better for identification, if the fins were stretched and displayed.

Thank You Charles for your message and comments.