FWIW, once your tetras get comfortable in their home, expect them to become bolder at feeding time. I normally feed my betta girls first and then put in sinking micropellets for the tetras. The bigger tetras now come up to the top when I get the betta pellets out and *will* go for any unclaimed ones they see at the surface.
Also had one amusing episode in which my newest girl, who likes to grab her pellet, chew it, spit it out, chase it and regrab it learned the hard way that this might not work out so well when there's a tetra nearby!
The Boy Feesh: Indigo CT, Lavatail CT, Ghost CT, Chicory HM, Redfish VT, Magic DT
The Girl Feesh: Christmas CT, Shine VT, Snowflake CT, Stripes VT, Midnight CT, Grif VT, Tangerine VT, Wraith CT, Amethyst VT, Ice CT, Poe CT, Turquoise II CT