ANTimatter

Being an avid aquarium hobbyist, it is obviously just a matter of time before Neil finds himself travelling by wormhole to a small circumbinary planet in the constellation of Cygnus. Okay, it's probably more relevant that he is the grandson of a woman who had befriended extra-terrestrials at the turn of the 21st century.

Having been chosen to broker a peace agreement between Mortian and Earth peoples, Neil is hampered in his efforts by the disappearance of his Earthling friend, Aysha, the general unpredictability of life on planet Melinda and the sinister chicanery of the chilloks, a species evolved from ants that is bent on overthrowing humankind...

This is part of a trilogy of four books, the first of which, Through The Wormhole Literally, was published in 2015.