brittle stars can be spot fed some krill or clam or squidd lil piece like that put on the end of a stick... i use a kabob stick and put it on the end to target feed things....
i have a brittle in my tank have had him over 2 years i havent traget fed it for about 18 months now lol he just sticks his arms out and catches some of the frozen brine/mysid shrimp when i feed the fish and hes doing great....