Betta Fish: Lad is leery of his new roommate

Introduced an Amano to my Luna’s 10 gallon planted tank to help with algae. Observations: rude yet peaceful Betta behavior 🥹🥰

This guy has had neocaridina and Pygmy Cory neighbors, is half-blind, old, super chill, and swims slowly—not worried about any upheaval ✌🏼