While I'm on a bit of a rant, I get it. Keru is a "hulking" unjoined Trill. Ree has sharp teeth. Troi is an empath. People, at book number 7 in the series, you don't need to tell us these things every single time the characters appear in a scene. Titan suffers the most from this need to define each character's species and/or appearance nearly every time they appear.
Any book has the potential to be some reader's first book in the series. Since Titan
is just about the most episodic of the 24th-century series, that's particularly the case there. Writers shouldn't assume that every last person who reads a particular book is familiar with the earlier ones. Even people who have read the earlier ones may need a reminder about who's who, especially in a cast this diverse.