Help needed for green bottle blue not feeding

[Rtg]

Hi, looking for some help please. We have a green bottle blue, 3 years old. Moulted about 4 weeks ago. Un sexed although quite an aggressive t. Regularly flicks hair and strikes a defensive pose if disturbed.
Never been a ferocious feeder but will eat regularly.
Since before the last moult and since has not fed and is looking quite weak and skinny. No longer aggressive. Food has been offered bit no interest. Concerned about the condition of the t and the size.
Any advice or suggestions?
Thanks

 

[Rtg]

Pic of the t

 

[Enn49]

Is it possible that it's a male? Can you see any hooks on its front legs?

 

[Rtg]

Is it possible that it's a male? Can you see any hooks on its front legs?

Not seeing any hooks on the front legs. Possibly a female then? She/he's having a drink if water at the mo.

 

[Enn49]

Water is the main thing, they can go a long time without food but they do need water.