yeah from those photos my best guess would be female but would def need better photos, n NOOOOO dont even try to breed GT with RT contrary to their similar common names they are not that closely related and Red terrors are FARRR MORE aggressive that a GT would ever be, most likely RT would kill GT before they even reached sexual maturity, IF and thats a HUGE IF, you get a GT and RT to pair and not fight i still doubt their eggs would hatch but iv seen some weird combos out there so who knows, i wouldnt risk it though if you like your fish