Hermit crabs kill your fish?

[emmylou]

I came home from work yesterday and saw 2 hermit crabs having a feast on my bicolor dwarf angel. One was attached to it's mouth and another clamped inside the right gill. It took a minute to get them off but it was already dead. Pissed me off- it was my fav. fish and had him for about 9 months.
Checked the levels-- no ammonia, no nitrites, about 20ppm nitrates, everything else normal. Noticed no parasites on the fish and it has not been exhibiting abnormal behavior, so I think the crabs caught him resting and went to town. Has anyone experienced this before?

 

[sinner's girl]

any other fish harasing that fish? was the fish stressed out?

 

[emmylou]

it was the only fish in the aquarium and didn't appear to be stressed, so it sounds like jwtrojan44 is right.

 

[nerdy]

I agree with 44. hermits are scavengers that prey on things that are already dead!