Look, Ive been at this long enough that I'm not going to start taking shots at Aquaman this late in the game. I mean, The guy is one of DC's longest enduring characters, he rules over roughly 70% of the Earth's surface, and yes, he definitely does quite a bit more than just "talk to fish".
|On the other hand, he does tend to spend a lot of time bobbing around with a dumbfounded look. on his face.|
That said, Aquaman has a real chum-bucket of a rogue's gallery, and waaaay down at the bottom of that barrel you'll find The Human Flying Fish!
A menace to man and seagull alike, The Human Flying Fish first appeared in Adventure Comics #272 (May 1960) when this lunkhead, Vic Bragg, allows this quack surgeon and self-proclaimed "Medical / Aquaman expert", Dr. Krill, to sugically alter him into a human fish. Somehow, miraculously, he does not die, but instead goes on to be a reeaaly subpar supervillain.
The Human Flying Fish recently reappeared in the last few issues of Aquaman:Sword of Atlantis. It's probably his fault it cot cancelled.