https://www.trekcc.org/2e/index.php?mod ... ardID=3368
The following text to be specific: "When you complete this mission, if at least three different species are involved, you may draw up to seven cards."
My first reading is that this lets you draw until you have seven cards. But it could also be read as draw 7 cards no matter the hand size, you'll just have to discard at the end of your turn.
Can anybody confirm which reading is good?