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Stonecat madtom dying for unknown reason.


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#21 Fleendar the Magnificent

Fleendar the Magnificent
  • NANFA Member
  • Ohio

Posted 20 March 2019 - 02:26 PM

I have found stonecats dead in the river where I caught this one. River conditions perhaps? I know that the water quality has degraded as I find thousands of dead Asian clam shells and I find dead mussel shells in the river from time to time. So I can tell that the water quality has degraded as bivalves are a sentinel species that is an indicator of good water quality. Lots of empty shells and few living valves = poor quality.

 

That said, my stonecat( I call him zombie) DID survive the ordeal and somehow did come back to life as my son and I watched it die eating a darter, and has now grown from 3" when he was caught to 6". He leaves the spotfin shiners, bluntnose minnows and others alone, but every time I put in a creek chub or a silver shiner(3 in the past week) up to 4" long, they're GONE by the next day, and that's WITH small feeder fry in the tank as well. Time for Mr. Catfish to be moved to another tank....



#22 JasonL

JasonL
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  • Kentucky

Posted 20 March 2019 - 03:35 PM

I have found stonecats dead in the river where I caught this one. River conditions perhaps? I know that the water quality has degraded as I find thousands of dead Asian clam shells and I find dead mussel shells in the river from time to time. So I can tell that the water quality has degraded as bivalves are a sentinel species that is an indicator of good water quality. Lots of empty shells and few living valves = poor quality.
 
That said, my stonecat( I call him zombie) DID survive the ordeal and somehow did come back to life as my son and I watched it die eating a darter, and has now grown from 3" when he was caught to 6". He leaves the spotfin shiners, bluntnose minnows and others alone, but every time I put in a creek chub or a silver shiner(3 in the past week) up to 4" long, they're GONE by the next day, and that's WITH small feeder fry in the tank as well. Time for Mr. Catfish to be moved to another tank....


Probably not a bad idea to move your green sunfish with him too. Just a matter of time until he goes rogue on your micro species.

#23 Matt DeLaVega

Matt DeLaVega
  • Forum Staff
  • Ohio

Posted 20 March 2019 - 08:10 PM

Are Asian clams a good indicator species in North American streams?


The member formerly known as Skipjack


#24 Fleendar the Magnificent

Fleendar the Magnificent
  • NANFA Member
  • Ohio

Posted 21 March 2019 - 01:15 PM

I think that the green sunfish is due for a tank change. He should do fine with the catfish. However, I now have a tiny 1" long bluegill I have finally gotten to take blood worms. Once the sunnie and madtom move, I'll probably move him in with the micro species. He has a good while to go until he get's big and the spotfin shiners, being the greedy and gluttonous pigs they are won't bother him. Cripes, those spotfins demolish flake food and aggressive while doing it. They just tear the top water up.

 

Asian clams a good indicator species? Not sure. I was under the impression that all bivalves, native or not were an indicator of good water quality since they are sensitive to water pollution. I guess that's something to ask ODNR.

 

Chris M.



#25 gerald

gerald
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  • Wake Forest, North Carolina

Posted 21 March 2019 - 03:52 PM

Around NC I see plenty of Asian Corbicula clams is urban-impacted streams too.  Their periodic mass-die-offs in summer are probably related to heat and low DO; not necessarily pollutants.  They are apparently more pollution-tolerant than our native river mussels.  Also they just don't live as long; hence the large numbers of dead shells in many streams.


Gerald Pottern
-----------------------
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel


#26 Matt DeLaVega

Matt DeLaVega
  • Forum Staff
  • Ohio

Posted 21 March 2019 - 07:51 PM

And the shells last a long time, making it look like a larger event, I think.


The member formerly known as Skipjack




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