I do kinda expect a scene like this in the movie:

This wasn't quite the last issue of this series, but pretty much. From 1992, Aquaman #12, "Spoils of War" Written by Shaun McLaughlin, pencils by Ken Hooper, inks by Bob Dvorak.

A few plotlines would be wrapped up this issue, or at least about as wrapped up as they were gonna be: Aquaman returns briefly to Poseidonis, to be fired. The king tells him he's no longer their ambassador to the United Nations, partly because he kept getting wrapped up in superhero business, but largely because the king felt he may have undermined his authority. (I have no idea how Arthur wasn't king at this point, or what claim to the throne that king had.) Arthur tells him he quits, then checks on Vulko, who has also been fired, as he was a tie to the old regime. Vulko wanted to check out Tritonis, and Arthur, wanting to keep him safe, accompanies him.

Tritonius was the home of the mer-people, and currently fighting a civil war; albeit a rather civil one with rules and timekeepers. Their hero, Iqula, explains that their war must be fair, or how else could the righteous win? The king is starting to feel differently, though, and orders Iqula's wife S'ona captured. Vulko gets caught with her, and points out a plot point that might cause her problems later: she wore the mark of Kordax, an ancient ruler with the ability to communicate with sea life, blond hair, and total evil. Kordax was so evil, for years after the Atlanteans would kill any child born with blond hair. When Aquaman and Iqula counterattack, the king's men reveal S'ona's blonde hair, but Iqula rallies his men to not allow "superstition to stand in the way of freedom!"

S'ona had the ability to control fish as well, using some sharks to intimidate a man later; and the king's forces are defeated. Vulko was going to stay, and gives Arthur the Atlantis Chronicles...which I don't know if he would have if he had read them all the way through, since I think there were some revelations in there Arthur wouldn't like. That would be touched upon in the next series of Aquaman, this one was almost done, and left a few plot threads hanging: a possible love interest for Aquaman at the U.N, an Atlantean minister that had been immune to the Scarecrow's fear gas, the king's conflict with Aquaman. That last one would get wrapped up later, since it looks like Thesily would die in a seaquake, but I don't think Iqula or S'ona would appear later.