The "not typically predatory" is odd for a creature that normally only eats algae and swamp slime. Tactics wise, the original has "Even an outright attack probably just induces them to flee underwater or, barring that, fight back to the death. Spells or psionic abilities that allow a body to read the creatures’ minds reveal that while both possess intelligence, neither is even aware of the PCs’ existence. Essentially, *** the characters are beneath notice—not even worth considering."Looks good so far!
I guess we might as well go ahead and finish up the valgoss themselves. Tactics: Valgoss not typically predatory and avoid conflict when possible. When forced to defend themselves, however, they bite and burrow into their opponents.
Valgoss ignore other creatures unless directly interfered with, which prompts them to try to swim away underwater. If a valgoss cannot escape an attacker it fights to the death, biting and burrowing into its opponent.