T: Lophius piscatorius
As Dylan Thomas said 'Starless and Bible black'
T: Lophius piscatorius
For S I gonna guess Grey-breasted parakeet.
P Hymenochirus boettgeri
Q. Beaded Lizard
R. Dwarf mongoose
S. Princess Parrot
But it's still all to play for, because the winner will now be the person who names the genus of species T or the organ in the Mystery ★ question with the order of the species shown.
T looks like something I pull out of my beard after a day in the bush.