I bought it to use with frozen blood worms for my pea puffers. It seems like the holes are to small for the blood worms to go through so I will just use it as a feeding ring.
First saw these on a deans fish room and bought one. Love it for feeding blood worms and also take the cone out and feed regular food in the ring!
Have used it but fish just wait till food comes out to eat. Good price,
ReadyEasy Very happy
Dog decided it was a chew toy