It's less than obvious from this post's subject line, but I can still type. Gw'oth (singular, Gw'o) are starfish-like aliens that figure in the Fleet of Worlds series of novels. Jotoki (singular, Jotok) are starfish-like aliens that figure in the Man-Kzin War series of books.
But that's a very spacious (pun unavoidable) setting: call it a thousand years of future history in a steadily growing volume that is many light-years across. Plenty of room therein for storytelling ... MKW and FOW do not meet.
Humanoid aliens teem in SF, with seldom any speculation that the species are related even when the humanoids share a fictional universe. No such forbearance for starfishoid aliens. Speculation abounds, as in this Wikipedia article about Known Space, that Gw'oth and Jotoki are related.
The Gw'oth are among my contributions to Known Space. AFAIK, I'd never encountered the Jotoki when I first came up with the Gw'oth. To this day, I've read very few of the MKW stories. (There's no opinion embedded in that comment. Things just worked out that way.)
Perhaps the best way to show that Gw'oth are unrelated to Jotoki is to highlight some differences.
Jotoki: They begin life as independent eellike aquatic creatures swimming in fresh-water lakes. As adults they form air-breathing five-member colony creatures. Each "eel tail" (as one story describes a Jotok) is four feet long. Jotoki live on Earthlike planets.
Gw'oth: A Gw'o begins life as a five-limbed being -- and (being intentionally vague, to avoid spoilers) -- some Gw'oth can temporarily link into higher-order groupings. Gw'oth are aquatic throughout their lifecycle and live in the salt-water ocean beneath the ice of an airless moon much like Europa. An adult Gw'o is described in one book as "no bigger from tip to tip than the length of your arm."
Other than size, environment, and lifecycle, though, they're much alike :-)
I can't say when Jotoki may next figure in a story. As for the Gw'oth -- they'll be back in Betrayer of Worlds. Be afraid ...