I don't think my yellow spiny eel is eating. I'm feeding it thawed out frozen bloodworms and I have never seen it eat. I have only had this fish for 3 days now so it is possible that it has eaten and I never see it or it is not eating and will starve itself. I feed with the lights on. Are spiny eels nocturnal and I would be better off feeding at night or "twilight". Or is it just a shy fish? I have it with some zebra danios, maybe they are just scaring it. I have seen it come out of the sand several times but never have I seen it eat. Please help.