Blue crayfish with discus

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jacobfata

jacobfata

Candiru
MFK Member
Sep 22, 2018
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Is it possible to keep blue crayfish, well one blue crayfish and 90 gallon discus setup?
 
Had a brief foray into keeping local crayfish as a kid, small, unheated tank. That's the extent of any personal experience...

But with no comments yet, I've never heard of keeping them together. Can't imagine it's a good idea. My understanding is discus temperatures would stress them, but that wouldn't be my main concern. They're also predatory, with slow fish and lower level fish being they're easiest victims. On the other hand, they're vulnerable to larger, aggressive cichlids-- I've seen stories. I've only really seen them work with quick, mid and upper level fish that aren't too large, some barbs, hatchetfish... Even then, be prepared for the occasional one to go missing from what I understand. I also remember being on a forum where someone said they took chunks out of their fish at night.
 
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Everything I’ve read online pretty much and everyone I heard from at the local fish store says that they would most likely be fine but the crayfish is more at risk then the discus. I’ll keep a close ion fin nipping but so far so good.
 
NoobAquarist said:
That's a very bad idea. Crayfish are territorial and will grab the discus if they come too close. The discus would not be able to do anything to it.

The cray will tear them apart soon, long story short.
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Well thing is I feel pulled because my neighbor has had him blue with his very small half dozen discus for over two years now. My discus are a decent size and do normally kill the blues during molting. As soon as a notice a fin tear, and if it happens he’ll be removed and separated. He’s in 90 gallon and he’s even pushed out of my male discus’s territory. He’s found his own sappy now under the driftwood. I’ll keep you guys updated. Thank you for your help.
 
The only time crays are vulnerable is when they're molting. I've found a good way to keep them peaceful is to provide them with a secure but lighted molting space, so they feel threatened but aren't really in any danger when molting (you can use a partially transparent fish bowl, if it's completely transparent they won't go in at all). They'll get nervous and will try to swim away when confronted instead of fighting. This hasn't always worked but if you want to keep it then I think you should do this.
 
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NoobAquarist said:
The only time crays are vulnerable is when they're molting. I've found a good way to keep them peaceful is to provide them with a secure but lighted molting space, so they feel threatened but aren't really in any danger when molting (you can use a partially transparent fish bowl, if it's completely transparent they won't go in at all). They'll get nervous and will try to swim away when confronted instead of fighting. This hasn't always worked but if you want to keep it then I think you should do this.
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The you aquarium has lots of driftwood and places for a little guy to hide. He’s been very active in all over the place but never really messes with the fish so far. As soon as I see nipped fin he’s going in the sump lol.
 
If you want your Discus to have no fin's torn or injury's I suggest removing the Crayfish.
 
Not that this has anything to do with discus but I bought 3 crayfish for my mbu puffer when he wasnt doing well. The guy at the store shoved 2 regular crayfish and one different one in there and the mbu puffer ended up dead a few days later because of whatever illness he had. The 2 regular ones ended up being eaten by other fish in the tank but that special one grew and was causing trouble with any fish that went near him. Well yesterday my RTGG caught him crawling around and killed him for fun.
 
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