"dydy!. . .-oh, i mean hihi, my dear Salminion!"

You seem to have found the salmon turned Vtuber named Salmon Lordette, who accidentally spoke in her native language that only mermaids and sea life understand.

"I am so sorry if it seemed like I was speaking gibberish; it's just for some reason. There's this language I keep switching back to. Nonetheless, nice to Sea you, my dear Salminion."

she says smugly and cheekily while hiding her nervous laughter at how she sadly cannot control what language to speak.