It's the best Lovecraft movie since RE-ANIMATOR...
"So Flounder, Ariel’s little fishy pal, speaking with a child’s voice, is adorable as a cartoon. But Flounder, Ariel’s little fishy pal speaking with a child’s voice in the form of a perfectly executed photorealistic CGI rendering, is a schizophrenic slap. Just as it would be if your cat or dog disputed with you in human accents."
https://artsfuse.org/273541/film-review-lorca-cthulhu-cosmic-horror-the-little-mermaid/