Stuck Fish; Now There All Stuck and Dead!! HELP!

[marie]

I would suspect a predator that has just discovered how to catch fish and I don't think it is that crab you caught.

I would leave the tank fishless and try to trap...whatever it is when it gets hungry

[Coderad]

What should I be looking for? Should I set a trap?

[04scoobysti]

That looks like an emerald crab, pads on its pinchers, not points. Shouldn't have been killing any fish. Good luck with the hunt!

[Delphinus]

I don't think that's an emerald crab, too fuzzy (emeralds are smooth). It's not a good crab but there's no way it's responsible for a tank of dead fish. You have something else in there. Yes, I would be setting a trap. I'm thinking mantis or larger crab.

[Moogled]

Look for anything.

Scope out the tank at 4am in the morning and use a flashlight.

[Coderad]

Alrighty I 'll give it a try. Thanks everyone

[Reefer Rob]

That sure looks like the work of a Mantis Shrimp to me.

[Psyire]

My bro-inlaw had a crab that would pluck fish right out of the water and it wasn't surprisingly big. It plucked fish that were easily twice his size. Sinister...

[KrazyKuch]

But did he take all the fish in one night...prob not...crabs usually only take what they can eat at the time...so if it was one fish a night I could suspect a small crab....but all at once, definatly a crab thats bigger then a toonie!